Peanut does that all the time with her mousie. She'll hang onto it with her front feet and kick the daylights out of it with her back feet. When she's attacking it, she will walk over it with her front fee - as if it's not even there - then when it gets to her back feet she'll stop, paw at it with a front foot, then flop down and go at it. It's so funny when she does this.

Sometimes she will kick it away, but usually when that happens it ends up on the floor and then it's no fun anymore. For some reason the mousie is only fun and attack worthy when it's on the bed.