Frog Species

American Bullfrog



The Bullfrog is the largest frog found in North America. Their tadpoles also grow larger than other species. The colour varies from pale green to dark greenish/brown above and is creamy white below with variable dark mottling on the back or underside. It is distinguished by its very large tympanum which is always larger than the eye, and by the lack of dorsolateral ridges. Adult males have pale to bright yellow chins during the breeding season. Adults may reach up to 17 cm long.

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American Toad



The American Toad is a large, squat toad with warty brown, reddish or olive skin and variously coloured spots and skin glands. There is often a light line down the middle of the back. It is distinguished from other toads by its long parotid glands which do not touch its prominent cranial crests. Maximum adult size is 11 cm..

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Gray Treefrog



The Gray Treefrog looks identical to Cope's Gray Treefrog. The two speciesand can only be distinguished from each other by their calls. They have rough, green, brown or gray skin with large darker blotches on the back. Like many treefrogs, they have large toe-pads. The two species can be distinguished from other frogs by the dark-edged light spot under the eyes and by bright yellow-orange colouration under the thighs. Adults may reach 6 cm.

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Green Frog



The Green Frog is a large, true frog with large, distinct tympanum and prominent dorsolateral ridges. It may be green, bronze or brown, or a combination but is typically green on the upper lip. The belly is white with darker lines or spots. There may be some irregular spotting on the back. It is distinguished from other frogs in that the dorsolateral ridges run only partway down the back and do not reach the groin. The hind legs have dark bars. Males have a bright yellow throat. Maximum adult size is 10 cm.

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Northern Leopard Frog



A green or brown frog with large, light-edged spots. Leopard Frogs also have prominent light-coloured dorsolateral ridges and a white belly. They can grow to over 10 cm body length but this is quite rare. Adults are usually 5-8 cm

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Pickerel Frog



This is a moderate sized, true frog with smooth tan skin. It has prominent yellow dorsolateral ridges and bright yellow on the belly and undersides of the hind legs. It is distinguished from other frogs by the parallel rows of dark, squarish spots down the back. Adults can grow to almost 9 cm.

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Spring Peeper



The Spring Peeper is a typical treefrog being small, with enlarged toe pads and varying in colour from tan to gray. It is distinguished from other treefrogs by a dark X on the back. These tiny frogs reach no more than 3 cm.

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Western Chorus Frog



The Western Chorus Frog is a small, smooth skinned treefrog. Colour varies from green-gray to brown. There is a dark stripe through the eye and a white stripe along the upper lip. It is distinguished from most other treefrogs by the three dark stripes down the back. In some individuals the stripes are broken. Maximum adult size about 4 cm.

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Wood Frog



This is a moderate sized, true frog with prominent dorsolateral ridges. It may be reddish, tan or dark brown with a dark mask that ends abruptly behind the tympanum. Some individuals have a light line down the middle of the back. There is a dark blotch on the chest near each front leg. The belly is white and there may be some dark mottling.The toes are not fully webbed. Adults may reach up to 8 cm.

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