Not gonna lie, it’s cute and very funny when a dog chases its tail. They move in frantic circles and look like absolute goofs. Don’t they know they’re chasing a body part they’ll never really catch?

You probably look at your dog’s tail a dozen times a day without really thinking about it. I love my dogs’ tails. They are so different and they both use them and communicate with them so differently.

The question in the title is simple and straightforward, and many people—researchers and non-researchers including dog lovers—all have opinions on the matter. Everyone seems to know why dogs wag their ...