"...All dogs can become aggressive, but the difference between an aggressive Chihuahua and an aggressive pit bull is that the pit bull can do more damage. That's why it's important to make sure you are a hundred percent ready for the responsibility if you own a 'power' breed, like a pit bull, German shepherd, or Rottweiler...."
Dogs
by Robert McCammon
"...After years of having a dog, you know him. You know the meaning of his snuffs and grunts and barks. Every twitch of the ears is a question or statement, every wag of the tail is an exclamation...."
Random Facts :
Chihuahua's
Coat
Chis can be born with either short or long coats. This variation in coat type is a unique fact about Chihuahuas. The short-haired Chi requires little grooming but will need a wardrobe to help protect her from catching chill. The long-haired Chi does need regular brushing to keep her coat free of mats and tangles.
Chihuahua's
Size
Chihuahuas are the smallest breed of dog in the world. Most people won’t dispute this fact about Chihuahuas as they can be as small as just one pound when fully grown!