Dog barks constantly when someone comes in contact w/me
I've noticed for quite a while now, ever since my dog, (whose a chihuahua) was old enough to start barking, would bark constantly and very loud when someone would touch me, hug, high-five, pat on the back, etc. He also does that with other family members when someone touches them. So is he doing that because he wants to protect the person whose being touched, and is thinking they're getting harmed or something? And is it normal?