The Circle Family

Riddle: The Circle Family LOVES circles (who doesn't?). Their house is a circle, their garden is a circle, their furniture are all circles, if they could, they would BE circles (you get the gist). One day Mom and Dad, were going out, so they left their baby at home (stupid, right?). When they came home, the baby was dead (I knew it was dumb). Who did it? The Gardener said he was tending to the (circle) garden. The Maid said she was cleaning the corners. The Chef said he was cooking a (circle) snack.