"...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 Arthur Conan Doyle
"...A dog reflects the family life. Whoever saw a frisky dog in a gloomy family, or a sad dog in a happy one? Snarling people have snarling dogs, dangerous people have dangerous ones...."
Three dogs survived the sinking of the Titanic. They were two Pomeranians and one Pekingese from first class cabins.
Chihuahua's
Breed
Chihuahuas are a Toy Breed. According to the American Kennel Club (AKC), the Chihuahua is part of the Toy Breed category along with Shi Tzu, Pug, Pomeranian, Pomeranian and several other small dogs.