If you think laughter and comedy are reserved strictly for humans, you’d be wrong. A study in the late 1990s showed that creatures like rats emit ultrasonic vocalizations while playing with or ...

Add Yahoo as a preferred source to see more of our stories on Google. A rat king displayed at the University of Tartu Natural History Museum in Estonia. Some have claimed that the phenomenon in which ...

The respected science expert’s beautifully written book celebrates the adaptive ingenuity of animals whose traits have evolved over millions of years. That includes us — though humans are, at best, ...

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 ...

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 ...