19 Chihuahua Facts So Interesting You’ll Say, “OMG!”

Dogs love belly rubs simply because they feel good. It also sets off a specific reaction in their brain that responds to the stimulation of hair follicles. Experts believe that dogs love petting, and belly rubs in particular, because the stroking of hair is linked to social grooming.

“You can absolutely let your dog sleep in your bed! They love to be close to their humans, and it's far comfier than a dog bed or crate,” Silletto says.

When dogs curl up in a ball, it conserves warmth and protects their vital organs from possible predators. This position, however, limits movement of dogs during sleep. This position is most common during winter months when the weather is frosty or simply a dog may feel comfortable sleeping in that position.