Did you know? There are two main varieties of Chihuahuas: apple head Chihuahuas and deer head Chihuahuas.
Appleheads are bred to standard and are meant to have a well-defined stop with an almost 90 degree angle when the head is viewed in profile.
Deer heads, on the other hand, have a longer nose and narrower muzzle compared to the apple head.
Gizmo, the famous Chihuahua used to advertise Taco Bell Chihuahua from 1997 to 2000 was a lovely deer-headed Chihuahua. You can admire his smart expression in the picture below. https://en.wikipedia.org/wiki/Taco_Bell_chihuahua#/media/File:Gidget_Taco_Bell_chihuahua.jpg