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American Bullfrog
Rana catesbeiana
39.7045, -105.086
Field Notes
Description:
The dorsal surface of the bullfrog has an olive-green basal color, either plain or with a mottling and banding of grayish-brown. The ventral surface is off-white blotched with yellow or gray. There is often a marked contrast in color between the green upper lip and the pale lower lip. The eyes are prominent with brown irises and horizontal almond-shaped pupils. The tympani (eardrums) are easily seen and the dorsolateral folds of skin end close to them. The limbs are blotched or banded with gray. The forelegs are short and sturdy and the hind legs long. The hands are not webbed, but the feet have webbing between the digits with the exception of the fourth toe.
Habitat:
Small freshwater pond
Notes:
My excitement for finding bullfrogs quickly turned to disappointment when almost half of the frogs I found appeared to be covered in red sores/ulcers. These frogs were slow and unwilling to move. They were easy to catch. Their limbs also appeared to be swollen and they had skin sloughing around their ears. Only thoughts are that these frogs have a disease or fungus. I also found dead frogs in the area. The frog above has the sores I am referring to.
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