I have two dogs. the cool thing about dogs is they are very protective of their environment and owners.
That's right!  It seems no matter which breed and temperament, they all become "man's best friend."  I have a pug myself.
I have a Rat Terrier and a rescued French Bulldog both are good watch dogs and both are female.
I've heard of a Rat Terrier!  Is it good for keeping the house free of rodents, like a cat is?