Why do some dogs curl up when sleeping?
According to Behaviorist Dr. Margaret Gruen at NC State University College of Veterinary Medicine Animal Behavior there are 2 reasons:
1) TO KEEP COZY
“When dogs sleep in the wild, especially where it’s cold, they’ll dig a nest and curl up into it,” Dr. Gruen says. “This gives them warmth — tucking into a ball conserves body heat. It also protects their most vulnerable organs in the abdomen from would-be predators.”
2) TO CREATE SECURITY
If a dog is in unfamiliar territory, he will revert back to the instinct-based, curled-up sleep position.
So, if you bring a new pup home, you’ll want to give him enough space to acclimate to these new and unfamiliar surroundings.