Another early spring frog, the wood frog measures from 2 to 2 3/4 inches (5-7 cm.) long.

The presence of a "robber's mask" makes this an easy species to identify. The body color is generally light tan to dark brown, with a series of darker brown lines along the dorsolateral folds (the raised bumps between the eyes and the hind legs).

Found in most of Minnesota except the southwest corner, wood frogs prefer woods and forests and require marshes and small ponds for breeding.