Dogs have some of the most evolved teeth in the animal kingdom, to help them eat, groom, and defend themselves. But how does the number of teeth a dog have compare to the number that humans have?

Narrator Tip number one to keeping your dog's teeth clean and healthy: Let him chew. But not on just anything. First, make sure it's safe. No sticks, no rocks, and be careful about bones.

To brush your dog's teeth, they need to be comfortable with you messing with their mouth. It's best to start this when they are a young puppy. The process is desensitizing them to you touching and ...