10 Common Myths About Dogs Debunked 1. When a dog wags its tail, it’s happy! A dog’s tail is an important tool for communication, but wagging it doesn’t always mean they are happy. Apparently there’s a lot of science behind tail wagging and dogs are better at deciphering the code than we are. Yes, it can signal that the dog is happy, but it can also mean that it is agitated or annoyed. For a better interpretation of what’s going on you should look at the dog’s whole body for things like tense muscles and pinned back ears (not good)....
