Other than being the oldest dog breed on the continent of North America, Chihuahuas were introduced by the Chinese. They are small-sized dogs, longer than taller and have an apple-shaped head. What I found interesting about this breed is their distinguishing characteristic-erect ears. They kind of look cute like a bunny. Chihuahuas come in many different colors and they are dogs which can turn out to be great companions. They are determined, courageous, intelligent and become very attached to their owner. Personally, if I would have to choose another dog to take home, it would be