I don't mind animal abusers. What I can't stand are Carnies, circus folk. They're nomads, you know. Smell like cooked cabbage, have small hands.
Allow myself to introduce......myself. Good movie.
Sounds like a couple kids out on lunch break. Maybe check your doors. If the rounded part of the lock/latch faces to the outside of the house, someone can easily meter your house, even if locked. Even with the latch facing into the house( squared side out) given enough room between the door and the frame, you can easily just move the latch to open with a knife blade or coat hanger, etc. Hopefully what I'm trying to convey is coming across. Opening in this manner doesn't even unlock the door, it bypasses it completely. Sounds like kids to me. If so, they'll be back.