Western Toads are usually green or brown. They have a light stripe down the middle of the back and reddish-brown ‘warts’ on the back, sides and upper limbs. 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)