Female black-spotted frogs seem to deter males by croaking Courtesy of Makoto M. Itoh
Male frogs often force females to mate with them, but in one species, a croak from the female seems to persuade males to leave her alone. The sound may be an 鈥渉onest鈥 signal that she isn’t fertile and mating would be a waste of the male鈥檚 sperm and energy.
鈥淚n general, male frogs are known to jump on even inorganic objects if they are female-like,鈥 says at Nagoya University in Japan. 鈥淗owever, this species [stops attempting] such holding behaviour at the…


