Why do dogs like to be touched?

Dogs like to be touched because it is comfortable to be touched, and touching is also a way to express feelings. Dogs will only be touched by non-hostile people. When petting a dog, be careful not to touch the dog's paws. Dog's paws have many nerve endings and are very sensitive. Touching them will make them feel uncomfortable and insecure.
Caressing as a pleasurable interactive experience can lower blood pressure and moderate heart rate. These effects not only affect the human body, dogs' heart rates will also decrease when they are gently stroked by their owners. Additionally, in a broader sense, physical touch can also serve as an emotional thermometer. Research shows that humans can often sense emotions through touch, and perhaps dogs also sense affection from being touched.