Timber Rattlesnake (Crotalus horridus) wildspecies.ca

At Risk

Present in regions

Migratory species: Unknown

Taxonomic group:

Reptiles

Learn more about all species of Reptiles in Canada.

The General Status ranks do not have legal weight. They are meant to identify the species that may be at risk in Canada.

Access other data on this species on the NatureServe Explorer.

Common Names

English common name:

Timber Rattlesnake

Source: Society for the Study of Amphibians and Reptiles.

French common name:

Crotale des bois

In French, species in the subfamily Crotalinae are named "Crotale" (masculine), except for genus Sistrurus.

Year	English common name	French common name
2000	Timber Rattlesnake	Crotale des bois
2005	Timber Rattlesnake	Crotale des bois
2010	Timber Rattlesnake	Crotale des bois
2015	Timber Rattlesnake
2020	Timber Rattlesnake

Source: iNaturalist

Scientific Names

Higher Classification:

Superkingdom

EUKARYOTA

Kingdom

ANIMALIA

Subkingdom

BILATERIA

Infrakingdom

DEUTEROSTOMIA

Phylum

Chordata

Subphylum

Vertebrata

Infraphylum

Gnathostomata

Superclass

Tetrapoda

Class

Reptilia

Year	Scientific name	Family	Order
2000	Crotalus horridus	Viperidae	Squamata
2005	Crotalus horridus	Viperidae	Squamata
2010	Crotalus horridus	Viperidae	Squamata
2015	Crotalus horridus	Viperidae	Squamata
2020	Crotalus horridus	Viperidae	Squamata

Priority Score

This species is not designated as may be at risk

Trends in rounded national ranks

Year	Rounded National Rank	Description of the change	Reason for change
2000	Critically Imperiled
2005	Presumed Extirpated	Increased level of risk.	New COSEWIC assessment.
2010	Presumed Extirpated
2015	Presumed Extirpated
2020	Presumed Extirpated

Original Ranks:

Canada
2000	At Risk - 1
2005	Extirpated - 0.1
2010	Extirpated - 0.1
2015	Presumed Extirpated - NX
2020	Presumed Extirpated - NX

Yukon
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Northwest Territories
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Nunavut
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

British Columbia
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Alberta
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Saskatchewan
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Manitoba
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Ontario
2000	At Risk - 1
2005	At Risk - 1
2010	At Risk - 1
2015	Presumed Extirpated - SX
2020	Presumed Extirpated - SX

Quebec
2000	Not Present
2005	Undetermined - 5
2010	Undetermined - 5
2015	Unrankable - SU
2020	Not Present

New Brunswick
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Nova Scotia
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Prince Edward Island
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Newfoundland and Labrador
2000	Not Present
2005	Not Present
2010	Not Present
2015
2020

Labrador
2000
2005
2010
2015	Not Present
2020	Not Present

Newfoundland
2000
2005
2010
2015	Not Present
2020	Not Present

Pacific Ocean
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Western Arctic Ocean
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Eastern Arctic Ocean
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present

Atlantic Ocean
2000	Not Present
2005	Not Present
2010	Not Present
2015	Not Present
2020	Not Present