That laying on the back with the back legs splayed look must be a Poodle trait, huh?
Moses is a good one for doing that. He especially does it if he's upset at someone who's told him to move from his nap spot or refused him something he really wants. My 21 yr old smart aleck ds calls it Moses' "Kiss this!" look. He does seem to do it to flash his attitude as needed.
that photo of Denver is so funny. Dexter does that pose if he's laying on his belly and we start trying to rub his belly. we say that he's trying to get maximum belly rub w/o having to spend the energy to go on his back...haha