We looked after a cat for friends and he did a bunk out of the back door when the missus went out to put some washing out. A few weeks later and no sign so we had to fess up to our friends when they got back from their trip to Aus.
7 months later we got a call from the vets to say that "our" cat had just been brought into them injured.
We went up there and it was him, cost us a bloody fortune to get him patched up. He as well fed though, vet reckoned someone had taken him in after he escaped from our "strange" house.
In the meantime, our friends had got another cat. They took him back though and played happy families with their new cat pack!