These dogs are rarer than the short-haired Chihuahua. ... This head shape is standard. However, the deer-headed Chihuahua also exists. They have slightly longer heads and no slope in their nose.

Short-Haired Chihuahua. Most Chihuahuas have shorter hair. This type is considered the “typical” Chihuahua. This type fits the breed standard, so it is easy to find puppies at breeders.