I have to add mine to the list of those that enjoy this game
(IIRC, a poster had read some very dubious 'research' that suggested abused children play at being dogs. MN wisdom blew this out of the water)
Walked into the lounge to find DD1 on all fours over a bowl of "doggie food" (dry wheat puff things)
DD2 closely behind lapping a bowl of water
I drew the line at letting DD1 put a dressing gown cord round DD2's neck
They both enjoyed harassing the cat as part of the game
It went on for HOURS! Sound effects and everything!