"...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 Samuel Butler
"...The greatest pleasure of a dog is that you may make a fool of yourself with him, and not only will he not scold you, but he will make a fool of himself, too...."
Three dogs survived the sinking of the Titanic. They were two Pomeranians and one Pekingese from first class cabins.
Chihuahua's
Companionship
Chihuahuas are companion pets. Unlike many breeds who were developed for hunting or herding, the Chihuahua breed was developed solely as a companion animal and does this job very well.