Signs for sharks and seals are created by a University of Exeter student in Cornwall.

A deaf cat with heterochromia went viral after demonstrating its ability to understand sign language and use communication ...

In the 1970s a young gorilla known as Koko drew worldwide attention with her ability to use human sign language. But skeptics maintain that Koko and other animals that “learned” to speak (including ...

Humans are often thought to be the only animals capable of language. But it’s difficult to prove a negative like this because we’ll never definitively know the subjective interior monologues of other ...

Cutting-edge research shows that animal communication, such as whale clicks and bird calls, may be more like human language ...