Female frogs may croak to deter males from mating with them

Male frogs usually power females to mate with them, however in a single species, a croak from the feminine appears to steer males to go away her alone. The sound could also be an “trustworthy” sign that she isn’t fertile and mating can be a waste of the male’s sperm and power.

“On the whole, male frogs are identified to leap on even inorganic objects if they’re female-like,” says Makoto M. Itoh at Nagoya College in Japan. “Nonetheless, this species [stops attempting] such …