Where does the dark brown or black "mask" of the Wood Frog typically terminate relative to the ear structure?

Answer

Stretches from behind the eye to the tympanum (eardrum).

A prominent and reliable identifying feature of nearly all wood frogs is the distinctive dark brown or black masking stripe that runs along the side of the head. This mask begins specifically behind the eye and extends backward until it reaches the edge of the tympanum, which is the external eardrum. This characteristic termination point distinguishes the wood frog from some closely related species where the mask might be incomplete or stop short of the ear structure. This visual identification marker is key for field researchers and enthusiasts distinguishing *L. sylvaticus* from look-alikes, particularly during the summer foraging season when they are encountered outside of the breeding pools.

Where does the dark brown or black "mask" of the Wood Frog typically terminate relative to the ear structure?

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