Athena loves tug! It's a favorite game. She just about dances when she sees we're going to play it!
She knows the 'drop it' - but it's more my tone and forcefulness of saying it than anything else. But, she's also a smaller sized rott, not nearly the powerful jaws of my late Sasha.
Max has no idea about toys. He will chew (read: destroy) them but has not grasped the concept of fetch or tug. Poor dear gets confused watching us.