If you tickle a rat's belly, it squeals with laughter. However, we are unable to perceive this laughter as its frequency, around 50 kHz, exceeds the range of human hearing. Neuroscientist Jaak ...

Laughing is one of the best feelings in the world. It's a sign of happiness and it has some serious health benefits to boot. We tend to associate laughter with humans and possibly primates, but we're ...

Among humans, laughter can signify a lot of different things, from intimacy to discomfort. Among animals, however, laughter usually communicates something along the lines of “this is playtime—I’m not ...

For every mom, the sound of a baby laughing is like music to their ears. And, when the family pet dog is part of it, their giggles and snorts become even more special. This mom was smiling from ear to ...