My late mother-in-law's cat, we didn't know what to do with him after she died. Our current cat wouldn't stand for another one in our house, otherwise he would have come straight to ours. My brother-in-law has floorboards up all over his house, lives near a busy road too. So my mother stepped in and said she would take him, short or long term.
He really didn't enjoy the two and a bit hour car journey from one house to the other.
He's spent quite a bit of time cowering at my mother's house. But gradually getting more confident and doing more exploring. As expected, the moment she clapped eyes on him, his stay with her went from being 'short or long term' to 'permanent'.
My mother decided it was time to let him experience the garden (I would probably have said a bit too soon, given his not-fully-settled-ness, but my mother isn't well-known for her patience!)
So she opened the back door, and expected (like all previous cats she's know) that he would step out a little way, retreat back in, go out again for a further explore, come back again, and so on.
But he just zoomed out. Under her back gate (which I'd suggested she block, so he was at first at least forced to stay in the garden).
That was yesterday morning; still no sign of him. I know a day and a bit isn't long for a cat to disappear. I just really hope he comes back. He's a great big bruiser of a cat to look at, but he's really timid and scared of people. He never goes up to people outside, going out calling for him isn't going to make him come to you, but it might make him know the right direction to come home in, if he decides to.
I just phoned up my late mother-in-law's vet, to get his vaccination dates and see if he was microchipped (so I could get the chip details changed over to me, so if he turns up somewhere hopefully I'd be contacted). Turns out, while her dog was registered at the vet, the cat wasn't
So likely not chipped nor vaccinated
(yes, he was a pest to get in the carrier, a pest to pick up even; I can see my mother-in-law wouldn't have been able to get him to the vet on her own; but still...)