INATURALIST Observations 251461667
Huatabampo, Sonora: 26.648021, -109.270607: : 11/12/2024: maribellopez: 12 Nov 2024 ; Coordinate Uncertainty in Meters: 4.00000.

INATURALIST Observations 70022400
Navojoa, Sonora: 26.84327, -109.377912: : 2/22/2021: Alvaro Monter Pozos: 22 Feb 2021 ; Coordinate Uncertainty in Meters: 29798.00000.

INATURALIST Observations 83595779
Navojoa, Sonora: 26.8628, -109.350968: : 6/18/2021: ivansouffle: 18 Jun 2021 ; Coordinate Uncertainty in Meters: 15.00000.

Guaymas, Sonora: 27.887678, -110.942864: : 4/9/2019: Manuel Maga├▒a: 9 Apr 2019 ; Coordinate Uncertainty in Meters: 349.00000.

Occurrence Remarks:; Coordinate Uncertainty in Meters: 18.00000.

Guaymas, Sonora: 27.95772, -110.9702: : 9/7/2025: Manuel Maga├▒a: 7 Sep 2025 ; Coordinate Uncertainty in Meters: 14.00000.

Guaymas, Sonora: 27.984122, -111.075058: : 10/15/2025: Manuel Maga├▒a: 15 Oct 2025 ; Coordinate Uncertainty in Meters: 17.00000.

Occurrence Remarks: Atropellada; Coordinate Uncertainty in Meters: 50.00000.

Guaymas, Sonora: 28.00347, -111.030891: : 8/28/2021: Manuel Maga├▒a: 28 Aug 2021 ; Coordinate Uncertainty in Meters: 2256.00000.

Unknown, Sonora: 28.016998, -111.096964: : 7/18/2026: Usvaldo GC: 18 Jul 2026 ; Coordinate Uncertainty in Meters: 51.00000.

Guaymas, Sonora: 28.017277, -111.097111: : 11/8/2025: Usvaldo GC: 8 Nov 2025 ; Coordinate Uncertainty in Meters: 165.00000.

Occurrence Remarks:; Coordinate Uncertainty in Meters: 233.00000.

Guaymas, Sonora: 28.28, -110.724: : 5/21/2010: Ana Gatica Colima: 21 May 2010 ; Coordinate Uncertainty in Meters: 8000.00000.

La Colorada, Sonora: 28.621117, -110.134621: : 8/8/2023: jorgeortizv: 8 Aug 2023 ; Coordinate Uncertainty in Meters: 0.11000.

La Colorada, Sonora: 28.621192, -110.1343: : 8/8/2023: Eric Hough: 8 Aug 2023 ; Coordinate Uncertainty in Meters: 4.00000.

Hermosillo, Sonora: 28.8027, -111.212792: : 9/4/2021: Chris Gruenwald Herp.mx: 4 Sep 2021 ; Coordinate Uncertainty in Meters: 10.00000.

La Colorada, Sonora: 28.809675, -110.574366: : 7/22/2019: proservi: 22 Jul 2019 ; Coordinate Uncertainty in Meters: 263.00000.

Hermosillo, Sonora: 28.850295, -111.382011: : 6/10/2021: Oscar Leonardo Chavez Torres: 10 Jun 2021 ; Coordinate Uncertainty in Meters: 35.00000.

Hermosillo, Sonora: 28.867805, -112.002557: : 5/17/2019: naturegirlkh: 17 May 2019 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Poblado Miguel Aleman, Sonora; Coordinate Uncertainty in Meters: 8256.00000.

Hermosillo, Sonora: 28.943871, -111.851082: : 8/19/2017: Gert Jan Verspui: 19 Aug 2017 ; Coordinate Uncertainty in Meters: 22049.00000.

Hermosillo, Sonora: 28.94753, -112.00303: : 8/18/2017: John Sullivan: 18 Aug 2017 ; Coordinate Uncertainty in Meters: 29558.00000.

Hermosillo, Sonora: 28.99632, -110.933226: : 9/2/2017: Marina Acu├▒a: 2 Sep 2017 ; Coordinate Uncertainty in Meters: 17.00000.

Hermosillo, Sonora: 29.002426, -111.180382: : 9/11/2022: Jaime R Brise├▒o: 11 Sep 2022 ; Coordinate Uncertainty in Meters: 396.00000.

Hermosillo, Sonora: 29.011089, -110.954061: : 8/15/2022: Karl Hawkman Drakulfeith: 15 Aug 2022 ; Coordinate Uncertainty in Meters: 1863.00000.

Mazatan, Sonora: 29.017748, -110.390625: : 8/30/2016: Jorge Chacon: 30 Aug 2016 ; Coordinate Uncertainty in Meters: 3906.00000.

Hermosillo, Sonora: 29.021939, -110.944514: : 6/30/2022: Karl Hawkman Drakulfeith: 30 Jun 2022 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Juvenile curled up next to a water channel.; Coordinate Uncertainty in Meters: 127.00000.

Hermosillo, Sonora: 29.150661, -110.95192: : 9/13/2024: Andr├⌐s Verver: 13 Sep 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Hermosillo, Sonora: 29.155742, -112.011773: : 9/2/2018: Ra├║l Peralta Pardo: 2 Sep 2018 ; Coordinate Uncertainty in Meters: 3557.00000.

Hermosillo, Sonora: 29.161643, -110.973845: : 9/16/2014: Oscar Leonardo Chavez Torres: 16 Sep 2014 ; Coordinate Uncertainty in Meters: 61.00000.

Occurrence Remarks: Cascabel tigre; Coordinate Uncertainty in Meters: 459.00000.

Hermosillo, Sonora: 29.213987, -110.861442: : 7/18/2023: Jorge H. Valdez: 18 Jul 2023 ; Coordinate Uncertainty in Meters: 5.00000.

Hermosillo, Sonora: 29.258517, -111.962646: : 8/16/2018: Sam Fellows: 16 Aug 2018 ; Coordinate Uncertainty in Meters: 29508.00000.

Hermosillo, Sonora: 29.279399, -110.620478: : 9/13/2023: angel_trres: 13 Sep 2023 ; Coordinate Uncertainty in Meters: 29508.00000.

Occurrence Remarks: Cascabel tigre; Coordinate Uncertainty in Meters: 115.00000.

San Miguel de Horcasitas, Sonora: 29.489877, -110.721806: : 10/9/2023: Minerva Crucmile: 9 Oct 2023 ; Coordinate Uncertainty in Meters: 518.00000.

San Miguel de Horcasitas, Sonora: 29.602905, -110.687319: : 8/28/2014: Diego Barrales: 28 Aug 2014 ; Coordinate Uncertainty in Meters: 29458.00000.

Moctezuma, Sonora: 29.839263, -109.560333: : 10/11/2025: Rodrigo Osvaldo Borbon V├ízquez: 11 Oct 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Moctezuma, Sonora: 29.839264, -109.560196: : 10/11/2025: Miguel Francisco Enriquez Galaz: 11 Oct 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Opodepe, Sonora: 29.927113, -110.629206: : 6/13/2013: Oscar Leonardo Chavez Torres: 13 Jun 2013 ; Coordinate Uncertainty in Meters: 42211.00000.

Caborca, Sonora: 30.270879, -112.343392: : 7/22/2000: Carlos G Velazco-Macias: 22 Jul 2000 ; Coordinate Uncertainty in Meters: 44.00000.

Caborca, Sonora: 30.287124, -112.338265: : 5/20/1999: Carlos G Velazco-Macias: 20 May 1999 ; Coordinate Uncertainty in Meters: 91.00000.

Caborca, Sonora: 30.343587, -112.340082: : 4/28/1999: Carlos G Velazco-Macias: 28 Apr 1999 ; Coordinate Uncertainty in Meters: 48.00000.

Occurrence Remarks:; Coordinate Uncertainty in Meters: 29252.00000.

Occurrence Remarks: Occurrence Remarks: Bummer, killed by road-racing atvs; Coordinate Uncertainty in Meters: 23.00000.

Agua Prieta, Sonora: 31.260547, -108.952117: : 7/26/2023: josells: 26 Jul 2023 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: My first Tiger Rattlesnake and such an amazing snake. Was warming up on the road. Was very quick to rattle and try to get away.; Coordinate Uncertainty in Meters: 29252.00000.

Agua Prieta, Sonora: 31.260597, -108.952081: : 7/26/2023: gretel_carrazco: 26 Jul 2023 ; Coordinate Uncertainty in Meters: 0.11000.

Nogales, Arizona: 31.227403, -111.057722: : 8/10/2023: Hawken Carlton: 10 Aug 2023 ; Coordinate Uncertainty in Meters: 29252.00000.

Santa Cruz, Arizona: 31.269214, -110.64603: : 8/18/2022: Jenna March: 18 Aug 2022 ; Coordinate Uncertainty in Meters: 29252.00000.

Agua Prieta, Sonora: 31.260536, -108.952026: : 7/26/2023: Andr├⌐s Verver: 26 Jul 2023 ; Coordinate Uncertainty in Meters: 0.11000.

Agua Prieta, Sonora: 31.26058, -108.952112: : 7/26/2023: Anays Blanco: 26 Jul 2023 ; Coordinate Uncertainty in Meters: 4.00000.

Imuris, Sonora: 30.879997, -110.6506: : 5/17/2024: Ra├║l ├ülvarez Mora: 17 May 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: 73F, sunny; Coordinate Uncertainty in Meters: 29252.00000.

Imuris, Sonora: 30.913004, -110.617078: : 8/9/2024: Ra├║l ├ülvarez Mora: 9 Aug 2024 ; Coordinate Uncertainty in Meters: 0.11000.

Nogales, Arizona: 31.24114, -111.108363: : 8/17/2024: Max Roberts: 17 Aug 2024 ; Coordinate Uncertainty in Meters: 29252.00000.

Occurrence Remarks: Younger individual. Appeared to be skinny.; Coordinate Uncertainty in Meters: 29252.00000.

Nogales, Arizona: 31.307713, -111.07247: : 8/16/2024: Max Roberts: 16 Aug 2024 ; Coordinate Uncertainty in Meters: 29252.00000.

Agua Prieta, Sonora: 31.245124, -108.828034: : 7/31/2024: Jorge Chacon: 31 Jul 2024 ; Coordinate Uncertainty in Meters: 29252.00000.

Cananea, Sonora: 30.935044, -110.195733: : 8/9/2024: Eric Centenero Alcal├í: 9 Aug 2024 ; Coordinate Uncertainty in Meters: 8624.00000.

Bavispe, Sonora: 30.45861, -109.01222: : 9/16/2024: Dale Turner: 16 Sep 2024 ; Coordinate Uncertainty in Meters: 10.00000.

Nogales, Arizona: 31.302535, -111.176187: : 8/15/2024: Hawken Carlton: 15 Aug 2024 ; Coordinate Uncertainty in Meters: 29252.00000.

Agua Prieta, Sonora: 31.307496, -108.955606: : 7/27/2019: brandon_dietrich: 27 Jul 2019 ; Coordinate Uncertainty in Meters: 29252.00000.

Nogales, Arizona: 31.201139, -111.07608: : 8/25/2019: Jake Scott: 25 Aug 2019 ; Coordinate Uncertainty in Meters: 29252.00000.

Nogales, Arizona: 31.211077, -111.187209: : 8/5/2019: Jorden Perrett: 5 Aug 2019 ; Coordinate Uncertainty in Meters: 29252.00000.

Nogales, Sonora: 31.233613, -110.931292: : 10/28/2016: Francisco Velasco: 28 Oct 2016 ; Coordinate Uncertainty in Meters: 2064.00000.

Occurrence Remarks: De antemano una disculpa por las fotograf├¡as, era de noche y no ten├¡a EPP para acercarme a una distancia m├ís cercana.; Coordinate Uncertainty in Meters: 3339.00000.

Bacoachi, Sonora: 30.594781, -110.128096: : 7/6/2018: Cecilia Aguilar M: 6 Jul 2018 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Shown by other herpers; Coordinate Uncertainty in Meters: 29252.00000.

Nogales, Arizona: 31.292426, -111.1209: : 9/4/2021: James Bailey: 4 Sep 2021 ; Coordinate Uncertainty in Meters: 29252.00000.

Arizpe, Sonora: 30.575992, -110.127189: : 9/30/2021: Anny Peralta: 30 Sep 2021 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: Dead on road.; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: Dead on road.; Coordinate Uncertainty in Meters: 14.00000.

Occurrence Remarks: Active on road.; Coordinate Uncertainty in Meters: 13.00000.

Nogales, Arizona: 31.342053, -111.151142: : 8/3/2021: Rhytisma: 3 Aug 2021 ; Coordinate Uncertainty in Meters: 29252.00000.

GBIFID: 1883955149; Occurrence Remarks: Stretched out on gravel road.;; Coordinate Uncertainty in Meters: 0.11000.

Fronteras, Sonora: 30.735749, -109.571466: : 8/7/2019: brandon_dietrich: 7 Aug 2019 ; Coordinate Uncertainty in Meters: 29330.00000.

GBIFID: 3860332344;; Coordinate Uncertainty in Meters: 0.11000.

Unknown, Arizona: 31.327151, -111.165968: : 5/11/2026: Yinpeng Zhang: 11 May 2026 ; Coordinate Uncertainty in Meters: 29252.00000.

Santa Cruz, Arizona: 31.412433, -111.021793: : 7/28/2025: Courtney Christie: 28 Jul 2025 ; Coordinate Uncertainty in Meters: 29226.00000.

Unknown, Sonora: 31.281813, -108.99855: : 6/1/2026: Miguel Francisco Enriquez Galaz: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 6.00000.

Occurrence Remarks: Was crossing the road when the temp was around 86 degrees F.; Coordinate Uncertainty in Meters: 29252.00000.

Santa Cruz, Arizona: 31.440255, -111.051186: : 7/5/2025: timoteo_b: 5 Jul 2025 ; Coordinate Uncertainty in Meters: 29226.00000.

GBIFID: 3456606013;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3860041524;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 891134997; Occurrence Remarks: This proportionately small-headed, large-rattled snake is always a pleasant surprise to come upon, as it never seems to be especially common. Its venom harbors both hematoxic and neurotoxic properties, and is described as the most potent venom of any snake or rattlesnake in the U.S.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4921571196; Occurrence Remarks: 78F;; Coordinate Uncertainty in Meters: 29252.00000.

GBIFID: 5176510301; Occurrence Remarks: Hiking to the Spike. Very close to the Mexican border.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3335404234; Occurrence Remarks: Pulled up and found it eating DOR whiptail. Never seen tigris eat carrion.;; Coordinate Uncertainty in Meters: 4.00000.

Nogales, Arizona: 31.257382, -111.003262: : 8/10/2023: RJ Baltierra: 10 Aug 2023 ; Coordinate Uncertainty in Meters: 29252.00000.

Occurrence Remarks: Occurrence Remarks: DOR; Coordinate Uncertainty in Meters: 3.00000.

Santa Cruz, Arizona: 31.614627, -110.815204: : 7/25/2026: snowcloak: 25 Jul 2026 ; Coordinate Uncertainty in Meters: 29199.00000.

Pima, Arizona: 31.892078, -112.837188: : 7/26/2026: Ian McFaul: 26 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Santa Cruz, Arizona: 31.61189, -110.844634: : 6/2/2026: Nicholas Procopio: 2 Jun 2026 ; Coordinate Uncertainty in Meters: 29199.00000.

Occurrence Remarks: D.O.R, 80┬░F. My lifer; Coordinate Uncertainty in Meters: 29199.00000.

Santa Cruz, Arizona: 31.5884, -111.129889: : 7/5/2025: timoteo_b: 5 Jul 2025 ; Coordinate Uncertainty in Meters: 29226.00000.

GBIFID: 3455770002; Occurrence Remarks: Yearling on the crawl;; Coordinate Uncertainty in Meters: 29199.00000.

GBIFID: 3802808723; Occurrence Remarks: Tiger Rattlesnake (Crotalus tigris), Santa Cruz County, Arizona;; Coordinate Uncertainty in Meters: 25.00000.

GBIFID: 3858922410; Occurrence Remarks: About 30 cm long.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3881711146; Occurrence Remarks: We accidentally flipped this coiled tiger rattlesnake over by moving our garden hose on a cool morning. It stayed upside-down like this for about an hour and then uncoiled and moved under a nearby Baileya multiradiata.;; Coordinate Uncertainty in Meters: 23.00000.

GBIFID: 3947265564; Occurrence Remarks: Lifer tiger;; Coordinate Uncertainty in Meters: 29173.00000.

GBIFID: 3090803417; Occurrence Remarks: Tiger rattlesnake, Ruby AZ;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4400027456; Occurrence Remarks: Montosa Canyon;; Coordinate Uncertainty in Meters: 3285.00000.

GBIFID: 1986537948; Occurrence Remarks: Scanned from slide... Month and year accurate - date is approximate.;; Coordinate Uncertainty in Meters: 29226.00000.

GBIFID: 4465423839; Occurrence Remarks: Found eating a kangaroo rat!;; Coordinate Uncertainty in Meters: 29226.00000.

GBIFID: 4855473730; Occurrence Remarks: Tiger Rattlesnake (Crotalus tigris); FSR 184 Montosa Canyon - Mt. Hopkins Road, Santa Rita Mountains, Coronado NF, W of Arivaca Junction, AZ;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 4936794683; Occurrence Remarks: Really orange individual and really defensive for this species.;; Coordinate Uncertainty in Meters: 29199.00000.

GBIFID: 4936174444; Occurrence Remarks: 2;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 2283071584; Occurrence Remarks: 2010 Southeast Arizona Herping Trip;; Coordinate Uncertainty in Meters: 29199.00000.

GBIFID: 5231675451; Occurrence Remarks: Tiger Rattlesnake - Crotalus tigris While out searching for insects and other critters, we ran into a herpetologist who had earlier captured this snake for photographs and was now releasing it back to the wild. Happy World Snake Day!;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 2423093534; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4936372772; Occurrence Remarks: Juvenile female in grass adjacent to roadway. Imaged only. GTS 3639.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 4936837056; Occurrence Remarks: Subadult crossing roadway. With Doug Beckwith. Imaged only. GTS 3638.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2864704044; Occurrence Remarks: Road temp 78 air temp 78. Right by the Smithsonian picnic area.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3090609837; Occurrence Remarks: Tiger rattlesnake at our outdoor shower - Ruby AZ. Photo by Jeannette Hanby. FYI we now have 3 different rattlesnake species living in this one location.;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 2984353627; Occurrence Remarks: Found under rock outcropping in the evening after it had recently rained.;; Coordinate Uncertainty in Meters: 29146.00000.

GBIFID: 1024207261; Occurrence Remarks: The photos are of two very similar individuals found about a mile apart.;; Coordinate Uncertainty in Meters: 12064.00000.

GBIFID: 1703234047; Occurrence Remarks: 1/2 of this night;; Coordinate Uncertainty in Meters: 46816.00000.

GBIFID: 1802647799; Occurrence Remarks: 2/2 of this night.;; Coordinate Uncertainty in Meters: 18588.00000.

GBIFID: 3355349447; Occurrence Remarks: More pics to add;; Coordinate Uncertainty in Meters: 29226.00000.

Occurrence Remarks: Postnatal female; Coordinate Uncertainty in Meters: 29199.00000.

Santa Cruz, Arizona: 31.636355, -110.760621: : 8/17/2025: herphendrie: 17 Aug 2025 ; Coordinate Uncertainty in Meters: 29199.00000.

Pima, Arizona: 31.782361, -110.847778: : 8/16/2025: Bridget Spencer: 16 Aug 2025 ; Coordinate Uncertainty in Meters: 5.00000.

Pima, Arizona: 31.782415, -110.847733: : 8/16/2025: Grigory Heaton: 16 Aug 2025 ; Coordinate Uncertainty in Meters: 0.11000.

Santa Cruz, Arizona: 31.624581, -110.929: : 8/23/2025: timoteo_b: 23 Aug 2025 ; Coordinate Uncertainty in Meters: 29199.00000.

Pima, Arizona: 32.02189, -112.738154: : 8/29/2025: mel letterman: 29 Aug 2025 ; Coordinate Uncertainty in Meters: 29146.00000.

Pima, Arizona: 32.210798, -110.992726: : 10/21/2025: drubbletubble: 21 Oct 2025 ; Coordinate Uncertainty in Meters: 13.00000.

Pima, Arizona: 32.10443, -112.64215: : 8/29/2025: Melanie J. Davis: 29 Aug 2025 ; Coordinate Uncertainty in Meters: 29146.00000.

Occurrence Remarks: almost stepped on it!; Coordinate Uncertainty in Meters: 1.11000.

Pima, Arizona: 32.323588, -110.808105: : 9/13/2025: cameron_tescher: 13 Sep 2025 ; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 3881420125; Occurrence Remarks: IECC 2022;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4121389057; Occurrence Remarks: About 30 min after sunset off the main paved walkway between tram. Stop 1 and 2;; Coordinate Uncertainty in Meters: 196.00000.

Pima, Arizona: 32.160303, -110.722333: : 4/25/2026: Tom Benson: 25 Apr 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Occurrence Remarks: An unusual complication to catching backyard packrats!; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: Large adult with heavy head patterning and light and yellow coloration. There was heavy rain the night before.; Coordinate Uncertainty in Meters: 29120.00000.

Occurrence Remarks: Was crossing the road. There was heavy rain the night before.; Coordinate Uncertainty in Meters: 29120.00000.

GBIFID: 1898841887; Occurrence Remarks: In Arizona Upland Sonoran Desertscrub @ ~3000 feet elevation in Tortolita Mountains foothills where C. atrox is the commonly seen viper.;; Coordinate Uncertainty in Meters: 29093.00000.

Maricopa, Arizona: 33.5682, -111.997787: : 9/18/2025: Emmalee: 18 Sep 2025 ; Coordinate Uncertainty in Meters: 2.00000.

Occurrence Remarks: been a while since i stepped over a snake, very exciting when they are not around at 80F but are at 65F. think they have had a snack and they were not in a hurry which i appreciated tbh; Coordinate Uncertainty in Meters: 558.00000.

Pima, Arizona: 32.354483, -111.142246: : 10/1/2025: Alison Boelts: 1 Oct 2025 ; Coordinate Uncertainty in Meters: 976.00000.

Pima, Arizona: 32.222358, -111.107103: : 3/31/2026: bmannluke: 31 Mar 2026 ; Coordinate Uncertainty in Meters: 8.00000.

Occurrence Remarks: Was crawling along the edge of the road. A light rain storm hit just a few minutes later.; Coordinate Uncertainty in Meters: 29120.00000.

Occurrence Remarks: Small adult. Found on the crawl in a wash (photo 1). After photographing it, I left it alone and returned around 40 minutes later to find the same individual just a few inches away in a different coil (photos 4-5).; Coordinate Uncertainty in Meters: 29120.00000.

Pima, Arizona: 32.323487, -110.808992: : 5/10/2026: laloblitz: 10 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Pima, Arizona: 32.322983, -110.810333: : 5/10/2026: laloblitz: 10 May 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Pima, Arizona: 32.321688, -110.810958: : 5/12/2026: Noah Lieberman: 12 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Pima, Arizona: 32.323541, -110.808358: : 5/12/2026: Noah Lieberman: 12 May 2026 ; Coordinate Uncertainty in Meters: 0.11000.

Occurrence Remarks: in ambush; Coordinate Uncertainty in Meters: 29120.00000.

Occurrence Remarks: Neonate from last fall; Coordinate Uncertainty in Meters: 29120.00000.

Pima, Arizona: 32.339931, -110.859987: : 5/13/2026: cameron_tescher: 13 May 2026 ; Coordinate Uncertainty in Meters: 29120.00000.

Pima, Arizona: 32.157745, -110.716417: : 3/28/2026: carolinenelson: 28 Mar 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Pima, Arizona: 32.318224, -110.81122: : 10/1/2025: Brady Reed: 1 Oct 2025 ; Coordinate Uncertainty in Meters: 87.00000.

Pinal, Arizona: 33.17945, -111.652633: : 5/1/2025: Alex Gaouette: 1 May 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Graham, Arizona: 32.869234, -110.376814: : 8/24/2025: Jeff Rosenfeld: 24 Aug 2025 ; Coordinate Uncertainty in Meters: 2429.00000.

Maricopa, Arizona: 33.513242, -111.665642: : 6/2/2025: derekschinke: 2 Jun 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Pima, Arizona: 32.28994, -110.949412: : 6/8/2026: Jonathan Hakim: 8 Jun 2026 ; Coordinate Uncertainty in Meters: 29120.00000.

Pima, Arizona: 32.318672, -110.816003: : 7/22/2026: Leighanna Olaker: 22 Jul 2026 ; Coordinate Uncertainty in Meters: 4.00000.

Pima, Arizona: 32.323138, -110.810158: : 7/22/2026: Leighanna Olaker: 22 Jul 2026 ; Coordinate Uncertainty in Meters: 3.00000.

Pima, Arizona: 32.344238, -110.779888: : 6/1/2026: josephrlee: 1 Jun 2026 ; Coordinate Uncertainty in Meters: 1.00000.

Occurrence Remarks: Lifer!; Coordinate Uncertainty in Meters: 29120.00000.

GBIFID: 3759115088; Occurrence Remarks: Saw this little beauty on a hiking trail. About 2.5 ft long. He calmly moved off the trail and into bushes.;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3903231805; Occurrence Remarks: Roadkill individual found on Catalina Highway;; Coordinate Uncertainty in Meters: 395.00000.

GBIFID: 3903305709; Occurrence Remarks: It had been hit by a car and was stunned but based on the location on its body where it was hit, itÆll probably be okay.;; Coordinate Uncertainty in Meters: 7.00000.

GBIFID: 891102845; Occurrence Remarks: gravid female;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 3966369729; Occurrence Remarks: Rattler, but what type?;; Coordinate Uncertainty in Meters: 5.00000.

GBIFID: 1883532641; Occurrence Remarks: Yearling;; Coordinate Uncertainty in Meters: 29120.00000.

GBIFID: 1883948635; Occurrence Remarks: Photo credit: Mark Miller Observers: Mark Miller, Jeanine Allsup;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 1891304371; Occurrence Remarks: Dead In creek bed, partial rigamortis ca. TL 750-850 mm;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 3398753403; Occurrence Remarks: Road kill.;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 4112042940; Occurrence Remarks: Apologies for poor images, these are screen grabs from a video.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4116489821; Occurrence Remarks: DonÆt get to see them eating often. Seen at sundown hiking out.;; Coordinate Uncertainty in Meters: 29146.00000.

GBIFID: 1913157295; Occurrence Remarks: I got a look at the head of the rodent before swallowing began and it had obvious fur-lined cheek pouches but was not Dipodomys (no light stripe on hip, front and hind legs similarly developed and head not large enough for a k-rat). It was too large for a desert pocket mouse (Chaetodipus pinicillatus), so I suspect it was C. baileyi - Baileys pocket mouse. I was afraid of taking flash photos before swallowing was well underway for fear of frightening the snake away.;; Coordinate Uncertainty in Meters: 100.00000.

GBIFID: 4407421742; Occurrence Remarks: Im not sure what type of snake this is. Does anybody know?;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 4413895155; Occurrence Remarks: Rattlesnake was in middle of road and unfortunately was ran over between pictures;; Coordinate Uncertainty in Meters: 29093.00000.

GBIFID: 4414212693; Occurrence Remarks: Was streched out in the road when I first saw it. Very nice purple gray individual.;; Coordinate Uncertainty in Meters: 29120.00000.

GBIFID: 4414369693; Occurrence Remarks: Fresh DOR;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4438698495; Occurrence Remarks: Restricted access area;; Coordinate Uncertainty in Meters: 4.00000.

GBIFID: 1291661329; Occurrence Remarks: Very warm night - temp is 92 F.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 1453064682; Occurrence Remarks: As I headed up the road to repair a fence, I saw this snake warming itself in the middle of the road which was just beginning to get sun. It was about 8 a.m., and mid-80s. There had been no rain with the previous 48 hours, although it was rather humid. As I stepped closer for a photo, it slid under the low branches of a catclaw acacia tree, and stayed coiled up under there while I repaired my fence.;; Coordinate Uncertainty in Meters: 3.00000.

GBIFID: 4851776811; Occurrence Remarks: Crossing path at dusk;; Coordinate Uncertainty in Meters: 327.00000.

GBIFID: 4855441955; Occurrence Remarks: Baby Tiger Rattlesnake (Crotalus tigris); S Redington Road, San Pedro River Valley, SE of San Manuel, AZ;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4867763292; Occurrence Remarks: Curled up very tightly;; Coordinate Uncertainty in Meters: 6.00000.

GBIFID: 4910653521; Occurrence Remarks: About 2-3 feet long with a very small head. Body color was mostly brown-red with a leopard-like pattern.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4919675795; Occurrence Remarks: Rattling away;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 4923779501; Occurrence Remarks: 90F 30 TL;; Coordinate Uncertainty in Meters: 29146.00000.

GBIFID: 4935939518; Occurrence Remarks: Hiked in South Mountain ParkÆs Pima wash side. Left in situ (though it did extend its neck as if to move as I walked away) but was gone when I returned ~30 minutes later.;; Coordinate Uncertainty in Meters: 28984.00000.

GBIFID: 4936062035; Occurrence Remarks: Spelunked with @birdnerd10; duplicate of one of his observations; we reobserved this individual in the vicinity several times over the following weeks. Apparently shares the cave with [this *atrox*](http://www.inaturalist.org/observations/240817128) Cf. [2](http://www.inaturalist.org/observations/238990696), [3](http://www.inaturalist.org/observations/240822258);; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 4937023507; Occurrence Remarks: Spelunked with @birdnerd10; duplicate of one of his observations; the second of our observations of this beautiful and sizable adult over a span of weeks Cf. [1](http://www.inaturalist.org/observations/238986304), [3](http://www.inaturalist.org/observations/240822258);; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 4945510508; Occurrence Remarks: Basking and quickly excited. Released into a suitable crevice. Phoenix Mountains. Quite possibly a reobservation of [this given the similar size, coloration, and shared den.;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 4946233250; Occurrence Remarks: Hiked with @birdnerd10; duplicate of one of his observations; our third observation of this individual, which we waited from afar to see reenter its den (~10m from where it sat in ambush) at ~08:45. Cf. [1](http://www.inaturalist.org/observations/238986304), [2](http://www.inaturalist.org/observations/238990696);; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 4952248779; Occurrence Remarks: *I am trained and licensed to relocate rattlesnakes* This guy was in a friendÆs front yard, beautiful!;; Coordinate Uncertainty in Meters: 142.00000.

GBIFID: 5007153926; Occurrence Remarks: This fellow lived on the grounds of SASI for a year or 2. Wild.;; Coordinate Uncertainty in Meters: 244.00000.

GBIFID: 2366124363; Occurrence Remarks: Hiding under the cactus;; Coordinate Uncertainty in Meters: 14.00000.

GBIFID: 2397540948; Occurrence Remarks: Overnight DOR;; Coordinate Uncertainty in Meters: 29120.00000.

GBIFID: 1453101400; Occurrence Remarks: Found in a wash. Didnt react much to me other than with the eye! Also thought tiger rattlesnake maybe?;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 2626611274; Occurrence Remarks: on Arizona Trail;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2826265694; Occurrence Remarks: Sadly, this beautiful snake was run over by a vehicle, and dead when I found it. The snake was approximately 18 inches in length.;; Coordinate Uncertainty in Meters: 29066.00000.

GBIFID: 2850899330; Occurrence Remarks: Photo creds Jaden Clark with Cam S.;; Coordinate Uncertainty in Meters: 54261.00000.

GBIFID: 2856524660; Occurrence Remarks: Observed on Garwood trail in Saguaro National Park East. Initially in open but quickly went into cactus to hide.;; Coordinate Uncertainty in Meters: 61.00000.

GBIFID: 2859981815; Occurrence Remarks: *LIFER*;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2862582481; Occurrence Remarks: Any port in the storm! Despite record hot weather recently, the water in the tank is 80F.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 2873950083; Occurrence Remarks: In Saguaro National Park East on Carrillo trail between Wild Horse and Garwood intersections;; Coordinate Uncertainty in Meters: 8.00000.

GBIFID: 1584416782; Occurrence Remarks: Moved safely off the road;; Coordinate Uncertainty in Meters: 29120.00000.

GBIFID: 1586132739; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 1668877564; Occurrence Remarks: Nice pose! Lying under a low lying mesquite tree and in some debris in wash from recent rains.;; Coordinate Uncertainty in Meters: 595.00000.

GBIFID: 3320888241; Occurrence Remarks: Throughout the night I saw two banded geckos within 15 feet of this spot.;; Coordinate Uncertainty in Meters: 0.11000.

GBIFID: 3330502703; Occurrence Remarks: Post-monsoon in situ on rocky, upper Sonoran Desert slope crossing Pass Mountain trail. Young, clearly banded snake about 8-10in long.;; Coordinate Uncertainty in Meters: 55.00000.

GBIFID: 3330730546; Occurrence Remarks: Overnight DOR;; Coordinate Uncertainty in Meters: 10.00000.

GBIFID: 3330873564; Occurrence Remarks: In Saguaro National Park East on Wildhorse between Carrillo and Three Tanks;; Coordinate Uncertainty in Meters: 31.00000.

GBIFID: 3333082642; Occurrence Remarks: Note buffy color and stripes rather than spots or diamonds. Seen within ~5 feet of Western Diamondback;; Coordinate Uncertainty in Meters: 12.00000.

GBIFID: 3335379108; Occurrence Remarks: this one absolutely did not want to share their little bit of shade on the trail. not real big, couple of feet maybe;; Coordinate Uncertainty in Meters: 602.00000.

GBIFID: 1703234029; Occurrence Remarks: Large animal. Narrowly saved from traffic.;; Coordinate Uncertainty in Meters: 8661.00000.

GBIFID: 3337642514; Occurrence Remarks: DOR;; Coordinate Uncertainty in Meters: 17.00000.

GBIFID: 3344049328; Occurrence Remarks: Didnt get photo of small head before it went under rock;; Coordinate Uncertainty in Meters: 28957.00000.

GBIFID: 3355654203; Occurrence Remarks: Juvenile. Seen while doing desert tortoise surveys for AZGFD under required permits.;; Coordinate Uncertainty in Meters: 29012.00000.

Pima, Arizona: 32.31858, -110.811848: : 8/23/2025: Mike Ostrowski: 23 Aug 2025 ; Coordinate Uncertainty in Meters: 11.00000.

Occurrence Remarks: Unfortunately the victim of a car.; Coordinate Uncertainty in Meters: 4.00000.

Pinal, Arizona: 32.538179, -110.914817: : 7/19/2026: Patrick Cicero: 19 Jul 2026 ; Coordinate Uncertainty in Meters: 29093.00000.

Pima, Arizona: 32.327287, -110.7686: : 8/16/2025: brandonlat: 16 Aug 2025 ; Coordinate Uncertainty in Meters: 4.00000.

Maricopa, Arizona: 33.947589, -111.951299: : 3/1/2026: speters7: 1 Mar 2026 ; Coordinate Uncertainty in Meters: 293.00000.

Maricopa, Arizona: 33.741048, -112.097442: : 3/2/2026: Emma Jaworski: 2 Mar 2026 ; Coordinate Uncertainty in Meters: 192.00000.

GBIFID: 3902947124; Occurrence Remarks: Coachwhip a few feet above it in shrub.;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 4926099119; Occurrence Remarks: Not my lifer per se but the first I was able to photograph before it escaped;; Coordinate Uncertainty in Meters: 28930.00000.

GBIFID: 2397696982; Occurrence Remarks: Spotted this tiger rattlesnake at 6:45AM on Bootlegger. He/she did rattle but only when I stepped closer to get my picture. Gave it a wide berth and it moved slowly off the trail;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3031654914; Occurrence Remarks: This was a juvenile, measuring approximately 10.......my pictures make it appear larger due to the zoom at 7:30AM;; Coordinate Uncertainty in Meters: 1.11000.

GBIFID: 3355739592; Occurrence Remarks: A beauty!;; Coordinate Uncertainty in Meters: 0.11000.

Maricopa, Arizona: 33.836459, -112.003496: : 10/1/2020: Ranger Mark: 1 Oct 2020 ; Coordinate Uncertainty in Meters: 15.00000.