Waiving His Flag

After the neighbors dog had her puppies and after they got old enough, they would run around the yard and occasionally come up to my fence for attention.  Rowdy is always interested in the puppies and would like to play, but can't because of the fence.  However, he does raise his tail up high in a slight curl and the longer hair sticks out away from the tail, like he is waving his flag as he is running along the fence and saying 'notice me!'