Just like humans, dogs have two sets of teeth, puppy and adult. At around four months of age — and it can vary from breed to breed and even.
We will discuss how veterinarians determine dog age. After all of their adult teeth are in, it's harder to determine an age range by studying.
These primary teeth generally erupt or emerge into the oral cavity between the ages of 3 to 6 weeks. At 3 months of age, the permanent teeth.