I've been googling this all day – and every time I am sent to Mumsnet.
I have a 10-year-old rescue cat who's been with my for 10 months and seems really settled. He asks to go out when he feels like it and asks to come in by tapping on the patio door.
But last night he was howling to go out from 11pm onwards. I gave in and let him out at midnight. But, more than 19 hours later he's still not back.
We're in an urban area so wouldn't expect him to wander further than neighbouring gardens as he appears to have been doing. He could have wandered further. He could have been injured. Or is it too soon for me to be worrying. Only had three hours sleep last night. Really need an early night tonight but am concerned in case he comes back when I'm not awake to let him in.