wood frog

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A North American frog (Rana sylvatica) that inhabits damp woodlands and has a brown masklike patch running from snout to ears.

GNU Webster's 1913

1. n. (Zoöl.) a common North American frog (Rana sylvatica) which lives chiefly in the woods, except during the breeding season. It is drab or yellowish brown, with a black stripe on each side of the head.

WordNet 3.0

1. n. wide-ranging light-brown frog of moist North American woodlands especially spruce