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

Square

What

Mexican black-tailed Rattlesnake Crotalus molossus ssp. nigrescens

Observer

raomoct68

Date

February 8, 2016

Place

(Somewhere...)

Description

serpiente de cascabel

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

salamander9505

Date

June 23, 2012

Description

Very skinny snake.

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

salamander9505

Date

August 22, 2008

Place

Kitt Peak (Google, OSM)

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

salamander9505

Date

August 20, 2008

Place

(Somewhere...)

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

najera

Date

July 7, 2015

Place

(Somewhere...)

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

najera

Date

July 7, 2015

Place

(Somewhere...)

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

happyherper

Date

August 25, 2015 09:44 PM CDT

Place

(Somewhere...)

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

rosybadillo

Date

January 3, 2016

Place

(Somewhere...)

Photos / Sounds

Square

What

Oaxacan Black-tailed Rattlesnake Crotalus molossus ssp. oaxacus

Observer

sorilet14

Date

February 19, 2015

Place

(Somewhere...)

Photos / Sounds

Square

What

Northern Black-tailed Rattlesnake Crotalus molossus ssp. molossus

Observer

sandboa

Date

June 17, 2012 10:23 PM CDT

Photos / Sounds

Square

What

Black-tailed Rattlesnake Crotalus molossus

Observer

gerjhe

Date

the past

Place

(Somewhere...)

Photos / Sounds

What

Black-tailed Rattlesnake Crotalus molossus

Observer

gcsnelling

Date

July 28, 2014 04:19 PM MST
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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