history: I had my front door open and a cat (not mine) ran in my house. I had my front door open and a cat (not mine) ran in my house.
current: Not yours? That is so weird, usually they  are on their way OUT not IN! Lol
next: I know! we were all surprised. My god was going nuts and my cat hid under the couch while we chased the stray around trying to get it out.