"...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
Brain Size
I like big brains, and I cannot lie! It is a proven Chihuahua fact that, in body to brain ratios, these little dogs have the biggest brain of any other breed. This will come as no surprise to dedicated Chi lovers who know just how smart and clever their little dog can be!
Chihuahua's
Size
A Chihuahua is a Chihuahua! A fun fact about Chihuahuas is that they come in many shapes, sizes, and colors but they are ALL still Chihuahuas! Whether a “tea-cup†size or a “standard†size; whether apple-head or deer-head; whether long-haired or short-haired – there is only one Chihuahua breed.