Adult dogs typically have 42 permanent teeth in total. This includes 20 teeth in the upper jaw and 22 teeth in the lower jaw
. Puppies, on the other hand, have 28 deciduous (baby) teeth, which start to appear around 3 to 4 weeks of age and are usually all present by 3 to 5 months. These baby teeth are eventually replaced by the adult teeth between 3 to 7 months of age
. The 42 adult teeth consist of different types specialized for various functions: 12 incisors, 4 canines, 16 premolars, and 10 molars
. Some small dog breeds may have fewer teeth due to their jaw size or congenital conditions, but 42 is the standard number for most adult dogs
