ANCHORAGE, Alaska (KTUU) - Laughter has always been somewhat of a mystery. There’s little information on why humans do it, but we know we’re not the only ones who do. In fact, rats can and do laugh, ...

A new study is linking brain behavior to silly playtime practices. And they have lab rats laughing out loud to prove it.In the video above, you can hear tiny high-pitched giggles from a rat being ...

David Stipp’s “Why Rats Laugh & Jellyfish Sleep” is a breezy ode to nature’s long game. The respected science expert’s beautifully written book celebrates the adaptive ingenuity of animals whose ...

To study play behaviors in animals, scientists must be able to authentically simulate play-conducive environments in the laboratory. Animals like rats are less inclined to play if they are anxious or ...