My male puppy does this all the time (he is fixed). He does it when he wants to play. He will do that and then pounce on one of the other Yorkies to play with them.
His mother also does this when she wants to play, so it is not just a male thing. My friend laughs when she sees him do it because she owns his mom and sees so much of her in him.
__________________  It's raining Yorkies here! LOL Teek  ,Rowan  , Raksha (Grand Puppy)  , Raelyn  |