He literally knocked on my door, begging to be let in from the freezing cold

I thought it was my housemate who locked himself out, but turns out, it was this little buddy who came right on in. Got along decently with my dog, and now we're at the vet to check him out. We think he must have tried to get too close to a fire or under a car to try to get warm last night bc his left whiskers and fur are singed 😭