For the past two decades, scientists have been manipulating genes to grow human cells where you wouldn’t quite expect them.

Narrator: Lions have them, hippos have them, and even you and I have them: canines, those long, pointy front teeth. They're actually the longest teeth in the human mouth. So what are these long ...

At the same time, the entire history of dogs and their relationship with humans has undergone some ... mainly smaller and with shorter muzzles and smaller teeth. Darwin was wrong about dogs.

Human toothpaste can make your dog really sick ... paying most attention to the canines and to the back of your dog's teeth. Don't worry so much about the inside; their tongue will keep that ...

Like humans, dogs can suffer from dental problems, including periodontal gum disease and tooth decay. Your dog’s diet can play a major role in maintaining your dog’s teeth and gum health ...