Do We Really Swallow Spiders in Our Sleep?: Quick Facts

Written and fact-checked by

The Information Architects of Encyclopaedia Britannica

Photos and Videos

A man sleeps with his mouth open on a bed, while a large spider sits on the pillow near his hand.

See All Videos and Images →

Topics

sleep spider 9 Fun Facts About Sleep Do Sharks Sleep?Why Do Horses Sleep Standing Up?9 of the World’s Deadliest Spiders REM sleep NREM sleep Why Is Sleep Important?segmented spider How do spiders make circular webs?How Much Sleep Do You Need?