How many teeth does a dog have?

1. The tooth structure of adult canine teeth (permanent teeth) is: incisors, canines, premolars, and molars, a total of 42 teeth.

2. The dental structure of young canines is: 28 incisors, canines, and premolars in total, with 1 premolar and molar missing.

All canine teeth are short crown-shaped. The crowns of the first and second maxillary incisors are three-peaked, with a canine peak in the middle and small peaks on both sides. The remaining incisors each have two canine and small peaks, and the canine teeth are curved. It is conical in shape and has a sharp tip. It is a powerful weapon for offense and self-defense. The front teeth are three-dimensional and the teeth are multi-peaked.

Extended information:

The biological origin of dogs can be traced back to tens of millions of years ago. The history of dog domestication was about 15,000 years ago in the Mesolithic Age. Scientists argue from a genetic perspective that dogs may have been domesticated by humans as early as 100,000 years ago. ?

The first time the dog genome was deciphered was in 2005—even before researchers used genetic tools to trace the canine's earliest homeland. Early studies found high genetic diversity in dogs in East Asia and found other key markers in many rural dog populations, pointing to East Asia as the place where dogs were first domesticated.