Two Chihuahuas make them but no others if you want a purebreed.
Chihuahua and Dachshund
Yes, Aztecs did have dogs. The breed is called a Chihuahua. A Chihuahua is one of the smallest dogs in the world.
Chihuahua
The Chihuahua is the smallest breed of dog.
Either a St.Bernard and a chihuahua An Irish wolfhound and a chihuahua Or a German shepherd with a chihuahua
You can but it depends on what type they are. look up what the two dogs are and see if anyone has cross breeded them. i have a chorkie (a Yorkie and a chihuahua) at home
Dogs have lungs.
Dogs.
The Toltec's worshipped chihuahua's in ancient Mexico.
Yes!
It's unlikely that you can breed two dog breeds other than a chihuahua to create one. The dogs that made the chihuahua could be ancient or extinct. Chihuahuas could have also not come from crosses at all, just selective breeding.
Chihuahua's do shed moderately. If you have allergies to dogs then there is a good chance that having a chihuahua will bother you.