Possum should have a flat face now, due to that.
Squirrel? Learned this weekend how to turn a ROUND doorknob. I told Jett, if you don't LOCK the deck door (the front door is a hard turn and the one to the garage has been SUPERGLUED)... And Squirrel gets out? You get to go find her.
Fortunately, the few times she's gotten out? She comes back.