It seems like different dogs have different ways of showing when they are happy. Chipper will bounce and jump, and roll over on his back and squirm around on the carpet to tell me that he is happy. Sometimes, he just jumps up and down.
Tootsie has developed the technique of laying on her tummy and schooching herself along the rug for attention.
Some dogs like to dance, and I think that especially dogs that are Poodle , or part Poodle like to do this.
Ashley, my little silver Poodle, would stand up on his hind legs and dance around in circles when he was happy or excited. I really enjoyed watching him.
What does your dog do when he is happy or wants attention that you really like to watch ? I think that some dogs are just natural comedians and like to entertain us.