Western Toad

Western Toad - credit: Floyd Bertand
Western Toad
Anaxyrus boreas
NWT List of Species at Risk: 
Threatened
NWT SARC Assessment: 
Threatened
Federal Species at Risk Act list: 
Special Concern
COSEWIC Assessment: 
Special Concern
NWT General Status Rank: 
At Risk
Description: 

The Western Toad is a large toad with a light stripe down the middle of the back and small round or oval  ‘warts’ on the back, sides and upper limbs. Western Toads are usually green or brown, but their colour varies from olive green to reddish brown or black. Newly hatched tadpoles and toadlets are black.

Male Western Toads in most of Alberta have vocal sacs and produce loud trills (advertisement calls) during the breeding season; they belong to the “Calling population”. Western Toads in the Northwest Territories (NWT) do not possess vocal sacs and belong to the “Non-calling population”.

Length: Newly hatched tadpole, 1 cm (0.4 in); Adult (snout to vent), 5 to 12 cm (1.9 to 4.7 in)