Scientists suggest female frogs listen for changes in the male calls as a signal for when it's warm enough to mate.

When it comes to mating, wild animals make their own rules. From lionesses of East Africa that mate with many males before ovulating and committing their eggs, to male walruses that joust for several ...

When the total solar eclipse happens on Monday, animals at homes, farms and zoos may act strangely. Researchers can’t wait to see what happens when day quickly turns to night. By Juliet Macur and ...