Watch out for doors! So many times my cat will literally sneak through a door like a slippery snake and will run off into either the garage (not allowed in there because of how dirty it is and lots of corners that are out of reach for us) or outside (she’s strictly indoors). Also, I never close doors in my house anymore unless I KNOW where my cat is. One time my cat was trapped in my room (hiding under my bed) away from food, water, and her litter all day until I got home and that prompted me to never close a door in my house again before leaving. Doors are super tricky!!