Chihuahua
 

 This is the smallest official dog breed in the world. They are usually 6 to 8 inches tall and weigh 2 to 7 pounds. They can be tawny, black, tan, white, chocolate, or brown. This dog does not need much exercise, grooming, or feeding. It is a great dog for people that have to stay home all day. Sometimes this dog can be very jealous, but it is also loyal. Chihuahuas are not that comfortable with strangers. This dog might need some obedience training. It is a very playful dog that will play with others. This breed needs very little exercise, not to much grooming, and it doesn't need barely any food.