David Stipp’s “Why Rats Laugh & Jellyfish Sleep” celebrates the adaptive ingenuity of animals whose traits have evolved over ...

Now that we know octopi like to play with cameras, it’s time to investigate other forms of animal play. Did you know that rats laugh when you tickle them? This ...

Puppies tussle in the annual Puppy Bowl. Kids start a game of tag in a schoolyard. Play has been observed and documented in many species — and not just in mammals. However, according to Dr. Michael ...

There are other ticklish animals out there—dogs and chimps, for instance—but rats are the easiest to handle in a laboratory setting. Neuroscientists Michael Brecht and Shimpei Ishiyama of the ...

Football always has a way of surprising fans, and during Belgium’s 4-2 victory over Wales, Real Madrid goalkeeper Thibaut ...

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 ...

(CNN) — Editor’s note: Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Puppies tussle in the annual ...