Classification
Within iNaturalist.org

All Names

  • English
    • Blacktail Rattlesnake
    • Black-tailed Rattlesnake
    • Black Tailed Rattlesnake
  • German
    • Schwarzschwanz-Klapperschlange
  • Scientific Names
    • Crotalus molossus
    • Crotalus ornatus
  • Seri
    • cocázni
    • sayahuqui
  • Tarahumara
    • sayahuki
  • Spanish
    • Cascabel de cola negra

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Recent observations

Photos / Sounds

15112996679 a1204af3ea s

What

Black-tailed Rattlesnake Crotalus molossus

Observer

rjadams55

Date

July 11, 2014

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

gtsalmon

Date

April 28, 2014 06:22 PM CDT

Description

Young adult gravid female (opaque) observed active in the Tinajas Altas Mountains. Imaged only. GTS 2051. Saw two others as well.

Photos / Sounds

What

Black-tailed Rattlesnake Crotalus molossus

Observer

pctws

Date

July 2, 2015

Description

First rattlesnake I've seen in the canyon!

Photos / Sounds

What

Black-tailed Rattlesnake Crotalus molossus

Observer

alanrosesia

Date

July 2, 2015 08:40 AM MDT

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

john_craft

Date

June 9, 2015 11:10 PM CDT

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

gerziz

Date

May 26, 2015

Place

(Somewhere...)

Photos / Sounds

What

Black-tailed Rattlesnake Crotalus molossus

Observer

bosqueaaron

Date

June 17, 2015

Photos / Sounds

What

Black-tailed Rattlesnake Crotalus molossus

Observer

corychia

Date

June 10, 2015

Photos / Sounds

Square

What

Northern Black-tailed Rattlesnake Crotalus molossus ssp. molossus

Observer

chris_mcmartin

Date

June 12, 2015 11:23 PM CDT

Description

DOR adult ; elevation 2844.49 feet; moon waning crescent; sky condition clear; pressure 29.81 inHg; humidity 56 percent. Tail had been cut off. Snake was still moving when found. Salvaged under permit and deposited in Texas Natural History Collections at University of Texas--Austin.

Photos / Sounds

Square

What

Northern Black-tailed Rattlesnake Crotalus molossus ssp. molossus

Observer

chris_mcmartin

Date

June 12, 2015 01:02 AM CDT

Description

Road cruised adult ; elevation 3864.83 feet; moon waning crescent; sky condition unknown; pressure 29.65 inHg; humidity 54 percent. Donated to Texas A&M--Kingsville Venom Lab for cancer research.

Photos / Sounds

Square

What

Northern Black-tailed Rattlesnake Crotalus molossus ssp. molossus

Observer

chris_mcmartin

Date

June 12, 2015 12:53 AM CDT

Description

DOR sub-adult ; elevation 4045.28 feet; moon waning crescent; sky condition unknown; pressure 29.65 inHg; humidity 54 percent. Salvaged under permit and deposited with Texas Natural History Collections at University of Texas--Austin.

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

tom79848

Date

June 24, 2015 10:08 PM CDT
View all observations

Description from Wikipedia

Crotalus molossus is a venomous pit viper species found in the southwestern United States and Mexico. Four subspecies are currently recognized, including the nominate subspecies described here.

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Conservation Summary

Source: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.4. http://www.iucnredlist.org/technical-documents/spatial-data. Downloaded March 2011.