Classification
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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

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What

Black-tailed Rattlesnake Crotalus molossus

Observer

russellm08

Date

May 4, 2016 10:57 AM CDT

Photos / Sounds

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What

Black-tailed Rattlesnake Crotalus molossus

Observer

sergiomarines

Date

July 28, 2015

Place

(Somewhere...)

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

gtsalmon

Date

June 15, 2012 10:15 PM CDT

Description

AOR adult on Hwy 90. With Dustin Rhoads (recorded also by him - http://www.inaturalist.org/observations/2787963). Imaged only. GTS 1287.

First "SnakeDays in Sanderson" weekend.

Photos / Sounds

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What

Black-tailed Rattlesnake Crotalus molossus

Observer

anna-0

Date

April 20, 2016 08:08 PM CDT

Photos / Sounds

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What

Black-tailed Rattlesnake Crotalus molossus

Observer

nancyed

Date

April 10, 2016

Place

(Somewhere...)

Description

observed & photographed at 5:26 pm by Ky Harkey

Photos / Sounds

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What

Mexican black-tailed Rattlesnake Crotalus molossus ssp. nigrescens

Observer

arturoc

Date

April 20, 2016

Place

(Somewhere...)

Description

Sobre el camino de terraceria, muy cerca de parcelas de maíz

Photos / Sounds

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What

Black-tailed Rattlesnake Crotalus molossus

Observer

tom79848

Date

April 17, 2016 10:07 PM CDT

Description

Kept for venom lab

Photos / Sounds

What

Mexican black-tailed Rattlesnake Crotalus molossus ssp. nigrescens

Observer

quirino

Date

April 5, 2016

Place

(Somewhere...)

Photos / Sounds

What

Black-tailed Rattlesnake Crotalus molossus

Observer

tpickjr

Date

August 28, 2014

Description

Group of three within a few feet of each other. Under rubble from a ruined dam.

Photos / Sounds

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What

Black-tailed Rattlesnake Crotalus molossus

Observer

tpickjr

Date

July 6, 2014

Photos / Sounds

No photos or sounds

What

Mexican black-tailed Rattlesnake Crotalus molossus ssp. nigrescens

Observer

sandboa

Date

August 15, 2006 09:00 AM CDT

Place

(Somewhere...)

Photos / Sounds

No photos or sounds

What

Mexican black-tailed Rattlesnake Crotalus molossus ssp. nigrescens

Observer

sandboa

Date

August 17, 2006 09:30 PM CDT

Place

(Somewhere...)
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

  • Mexico
    Sujeta a protección especial (Pr) (Source: Norma Oficial 059)
Source: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.4. http://www.iucnredlist.org/technical-documents/spatial-data. Downloaded March 2011.
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