We are in a block of flats on the first floor, and our neighbour across the hall got a kitten a few months ago, not sure if it would still technically be a kitten but it's not an adult cat yet! (We don't know them but have seen it look out of the window.)
Last night I heard the cat constantly meowing, and we never hear it otherwise - I could hear it through the walls this morning when I left for work. It was still meowing this morning. DH says "it's just a cat, it's what they do" but I cat-sit occasionally for people and it's unusual to hear a cat doing that unless it thinks someone's about to come through the door to feed it.
I doubt any other neighbours are looking in on it - there's been a few complaints about loud music/weed smoke from the flat and they haven't been very amenable to sorting that - and they don't pick up their post for weeks on end so hard to judge if they're just gone for the weekend or not. DH says "not your cat, not your problem" but it's bothering me. Am I just worrying over nothing?