Most male frogs want their mating call to stand out from the crowd, and they do that by calling when nobody else is. This makes sure that the females hear them loud and clear, and know where they are.

Imagine attempting to broadcast romantic messages to a potential mate while another Romeo is trying the same. Now, picture you are doing this under the imminent risk of having the messages intercepted ...

Male pug-nosed tree frogs confuse predators by overlapping their mating calls with those their neighbors. Purdue University / Henry Legett Male tungara frogs of Central and South America call out to ...