Dog treats are usually easy to find for pet owners: You try out a few, see what your pup likes and stick to their favorites. But when your dogs are toothless, senior chihuahuas, it gets a little ...

In nature, we usually think of teeth as a must-have for survival, used to bite, chew, tear, or grind food. But not all animals rely on teeth. In fact, some don’t have any at all, and still manage to ...