My husband always says that when Ruby and Shelley are lying on the living room floor gnawing on the antlers, they imagine themselves as having run down and killed an enormous bull elk, and are enjoying the very last fruits of their labors, having devoured the entire animal, hooves, hide and all.
(He also says that our one remaining Siamese cat imagines that they are gnawing the skulls of Siamese cats -- she doesn't REALLY know what happened to the other two deceased kitties although they died full of years and are buried in the yard under the rhododendrons)