Background: we have recently moved house, we've got two lovely kitties who are nearly two years old, and a lovely DS who is nine months old - he gets on reasonably well with our cats, the boy cat in particular. The cats have adapted really well to the house move and the baby.
The house is rented and while we're allowed the cats, we're not allowed to put a cat door in, so we leave a very small window open for them to get in and out. Since we moved in, there's been a thin and quite scabby cat who comes in sometimes - we think it's stealing their food, and on cold or rainy days, we often find it asleep in the conservatory. Our cats seem a bit perturbed by it but aren't actually fighting with it - but then they're not very aggressive in general when defending their territory, so we're not sure whether they're just frightened of it.
We're not bothered about it eating their food, as long as they're still getting enough. We're not bothered about it sleeping in the conservatory, as long as our cats aren't unhappy. If it were in good condition, we'd in, it was a neighbour's cat and probably just chuck it out whenever we see it in the house but we think from its condition that it must be a stray.
So finally here's the AIBU - would we be unreasonable to take it to our vets to get looked over? And to treat it for fleas? I'm not worried about it passing anything on to our cats because they're both up to day with their jabs but I don't want it to bring fleas in. A further AIBU - would we be unreasonable to adopt to, informally? We wouldn't shut it in, but we'd make it welcome. I'd not want to steal anyone's cat but I don't think it's being looked after.