If you thought laughter was just a human trait, you couldn’t be more wrong. Many animals have their own unique ways of expressing joy. If you’ve ever watched a dog with its tongue flopping out or seen ...

Laughter is often called the most human sound. It carries joy, relief, connection, and sometimes even healing. For centuries, we believed that laughter belonged only to us, a special emotional ...

For many years, psychologists and behavioral biologists agreed that laughter was a unique emotional expression found only in humans. However, as the study of animal emotions expanded this idea was ...

Animals bring so much joy into our lives. If you’re having a wonderful day, your dog will be thrilled to go run around in the ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Last week, while in a drowsy, ...