In 1994, researchers noticed that when rats anticipated an opportunity to play, they would let out a series of squeaky chirps. These were high-pitched, measured at 50 kilohertz. The researchers began ...

New research out of Purdue University shows that the beliefs of laboratory animal personnel are highly associated with their implementation of welfare-enhancing enrichment techniques. This study ...

Tickling is an intriguing sensation that operates beyond our control. It’s fascinating how laughter emerges involuntarily; our bodies react before our minds can even register the humor (Why Do We ...

Socrates wondered 2,000 years ago, and Charles Darwin also racked his brains: what is a tickle, and why are we so sensitive to tickling? ‘Tickling is relatively under-researched,’ says neuroscientist ...