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It’s nighttime and your pup nestles snugly in his bed, rolled up tight like a drum.
It’s a common slumber position for dogs, but why? Wouldn’t it be more comfortable to stretch out while catching some shut-eye?
Well, yes, says Dr. Margaret Gruen, DVM, a clinician at NC State University College of Veterinary Medicine Animal Behavior Service.
But there are two valid reasons why your canine rolls up in a ball to snooze — and they both relate to evolution.
“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.”
So if your pooch sprawls out to nap — instead of curling up — he’s either hot or he feels very safe in his environment.
If a dog is in unfamiliar territory, he will revert back to the instinct-based, curled-up sleep position.
For this reason, whenever you bring a new pup home, you’ll want to give him enough space to acclimate to his foreign surroundings.
Another tip from Dr. Gruen: Consider getting him a blanket. “This way, he can ‘dig’ a nest with the bedding material before he lies down,” she says, “instead of digging a place to nowhere on your carpet or couch.”
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