A mottled greenish frog sits in a puddle amid orange algal funk. It has a ‘fold’ or ridge of skin that runs from behind its eye down to its butt.

An olive-green frog sits in a muddy, stagnant puddle. It appears to be sitting on a burlap construction wattle.

#FrogFriday is on with this California Red-legged Frog (Rana draytonii). Note the thick ‘ridge’ that runs from eye to butt, which is a useful way of telling this species apart from non-native bullfrogs. #herps #frogfridays #frogs #amphibs #CRLF #redleggedfrog #caredleggedfrog #fieldbiologist