Question: Why do dogs wag their tails when they are happy?

Jack Snape answered on 19 Mar 2012:

🙂 I just looked this up on the internet. I think that there isn’t a definite answer to this this question but scientists think this is simply a way of communicating with humans and other dogs that they like something. A dog thinks that if it wags its tail when it is fed, a human will know that the dog enjoys being fed and then the human will keep feeding the dog. It’s just like smiling… a way of letting other people know you’re enjoying yourself 🙂