Rats showcase a unique form of communication by emitting ultrasonic calls during their playful and social interactions, which are inaudible to humans. Often occurring at a frequency of 50 kHz, these ...

A new study showed that laughter is a better indicator in determining friendships than even speech. Volunteers were able to pinpoint groups of friends versus strangers by listening to their laughter.

This article is republished from The Conversation. Laughter is an everyday reminder that we humans are animals. In fact, when recorded laughter is slowed down, listeners can’t tell whether the sound ...

A new study in the journal Bioacoustics found that 65 different species of animals have their own form of laughter. Study co-author Sasha Winkler describes the sounds animals make during play.

A new neuroscience review shows that spontaneous laughs and chuckles rely on partly separate brain systems, revealing ...