This Dog Is So Happy He Wags His Tail In His Sleep (VIDEO)

15/07/2014 11:57 BST | Updated 15/07/2014 11:59 BST

Think you're happy? We bet you're not as happy as Frank the dachshund here.

Adopted by Rafael Borges when he was in a very bad way, Frank is so content with his new life that he now wags his tail even when he's asleep. No, really. Just check out the adorable video above.

We think may have to up this list to 21...

20 Happy Dogs

(Via Viral Viral Videos)