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?
Yes the rat terrier will even chase frogs off the porch. The rat terrier is very good for herding livestock in small numbers as well.
Rat Terrier
The Rat Terrier is an American dog breed with a background as a farm dog and hunting companion. Traditionally more of a type than a breed, they share much ancestry with the small hunting dogs known as feists. Common throughout family farms in the 1920s and 1930s, they are now recognized by the United and American Kennel Clubs and are considered a rare breed. Today's Rat Terrier is an intelligent and active small dog that is kept both for pest control and as a family pet.
Info.
Phu Quoc with suggestions that historically one breed may have been imported to the other's location.
Description Temperament.
Rhodesian Ridgebacks are known to be loyal and intelligent. They are typically somewhat aloof to strangers; this is not to be confused with aggression, a Rhodesian Ridgeback with a good temperament will not attack a stranger for no reason. They require consistent training and correct socialization; they are often not the best choice for inexperienced dog owners. Rhodesian Ridgebacks are strong-willed and confident dogs. They are protective of their