Mark Wilson/The Boston Globe via Getty Images
A wood frog is perched atop masses of jelly-covered wood frog eggs laid in a vernal pool. Seasonally wet pools in the woods host a variety of specialized creatures, including wood frogs and spring peepers. But unlike spring peepers, the wood frog has no large X across its back.
A male spring peeper, showing part of the X on its back, calls for a mate.
A spring peeper perches on an inky cap mushroom in the Eastern U.S.
A young spring peeper hides on dew-covered grass in a Virginia swamp. The frog is only 1/4-inch (6 mm) long.