they come in different sizes
Some of them are the normal chihuahuas you see everywhere and the others are long haired chihuahuas.
yes and some don't
These are some of the breeding problems of chihuahuas: * Chihuahuas are prone to shivering when they are cold, excited, or scared. * Chihuahuas can be unfriendly toward other dogs if they're not socialized when young. * The Chihuahua's ears can be prone to ear wax build up and dry skin. * Chihuahuas are happy as companions, but they do need 20 to 30 minutes of exercise daily and can go for much longer than you might expect. * Chihuahuas can be reserved with strangers. * Chihuahuas are not the best dog to have when you have young children.
I must say that some chihuahuas do not back down from fights. Some of them will attack if threatened. It usually depends on the personality of the animal. From experience most chihuahuas will act like they will fight, but if you challenge them, they will run away but attack you on your way away from them.
Some are, but most are not.
Yes, Chihuahuas can get the flu.
Chihuahua's were worshipped by the Toltec's in ancient Mexico.
Chihuahuas have UFO's for ears.
Chihuahuas originated from the state of Chihuahua, Mexico.
chihuahuas have sensitive stomachs
Chihuahuas live in Mexico.