Why Does My Dog Do That
American Kennel Club
WHY DOES MY DOG CURL UP IN A BALL WHEN HE SLEEPS? It might seem like your dog would be more comfortable sprawled out on the couch than curled up in a little ball in the corner—and he probably would be! But some dogs sleep curled up nonetheless. Why? Blame evolution!
Dogs in the wild will dig a nest to sleep in, and curl up in it—especially if it’s chilly. This will help keep them warm and also keep their most vital organs tucked away from predators. So there are two good reasons why dogs devel- oped this behavior. If your dog stretches out when he sleeps, he’s either really hot or he feels safe and secure.
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