Basically, a dog can be a WATCH DOG, a GUARD DOG or a LAP DOG.
A WATCH DOG will bark first and may or may not bite or attack. The job of a Watch Dog is to bark and raise an alarm when a stranger enters your house or property. In fact, even many small breeds make great watch dogs.
A GUARD DOG will attack the intruder immediately – Good Guard Dogs bite first and ask questions later. The job of a Guard Dog is to look intimidating and act in a ferocious manner and be ready to protect his family and territory if the need arises by attacking any trespassers.
Both Guard Dogs and Watch Dogs bark to alert their owners of an intruder's presence and scare away the intruder. The Watch Dog’s job ends here, whereas a Guard Dog is capable of attacking the intruder should he trespass. Some breeds are excellent Watch Dogs but not good Guard Dogs because they bark loudly to alert their masters of intruders but are not aggressive in nature and are not given to assertive behavior. That is why whereas Guard Dogs must look tough and menacing and be ferocious in nature, even small but attentive dogs may function well as Watch Dogs.
A LAP DOG is an adoring pet who would gladly spend the entire day in his owners lap. Lap Dogs are cuddly and affectionate, many dog owners who pine for love prefer to have a Lap Dog.
So which type of pet dog do you want?