New research out of the University of Missouri shows that when it comes to female mate preference in a certain species of tree frog, there may be more than meets the eye. Females may actually prefer ...

The eastern grey tree frog (sound) looks exactly like the closely related Cope’s grey tree frog (sound). The big difference between the two species is beneath the surface—the eastern has twice the ...

Two related frog species differ by chromosome number, which deepened one species's calls and tells the females who's who. Steve Mirsky reports The eastern grey tree frog (sound) looks exactly like the ...