Amphibians, part of Maine’s wildlife population, are cold-blooded vertebrate (having a backbone) animals usually living on land but breeding in water, where their offspring change into adults.
An example of a Maine amphibian is the Spotted Salamander. It breeds in vernal pools (pools that have water in the spring but dry up later in the year). Their habitat may be threatened by clearing or filling of the land to eliminate the vernal pools. This could be the result of road building, clear cut logging, housing or other building development, among other factors.
A frog is a frog, of course, of course! Well, not exactly. Among those in Maine are Treefrogs, Pickerel frogs and Wood frogs.
Bullfrogs, such as those shown at Daicey Pond in Baxter State Park, are the largest frogs in New England at almost five inches. While they are yellowish green above the head and back, their size and deep voice distinguishes them from the green frogs.
The smaller green frog measures three inches. They are green about the head, top and under the jaw, with dark spots on the lower back and sides.
Maine Audubon Society, http://maineaudubon.org/conserve/citsci/v_insert.pdf
National Audubon Society. Field Guide to New England. New York, NY. Knopf. 1998. pp. 267-268.