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 ...

A well-deployed laugh can help grease a social interaction, even if nothing is funny. Catherine Falls Commercial/Moment via Getty Images Laughter is an everyday reminder that we humans are animals. In ...

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 ...

My three young daughters like to watch pets doing silly things. Almost daily, they ask to see animal video clips on my phone and are quickly entertained. But once my 7-year-old lets out a belly laugh, ...