My son woke me up from my post-nights nap yesterday afternoon.
"Mum, there's a cat looking at me through the patio doors. It's got a hole in its leg".
Indeed, it did have a hole in its leg, about two inches in diameter and 3/8" deep. It was a clean wound, it wasn't bleeding, and kitty looked pretty fit.
So I ignored my cat allergy, let him in for a cuddle and a drink of water, and rang the RSPCA who came and collected him a few hours later after he'd watched Alien with me on DVD. It was nice to have a bit of company. The asthma wheeze, snot and swollen face I could've done without, but hey-ho.
The RSPCA girl rang later. Puss was microchipped. He was identified almost at once. His owners had been looking for him for a fortnight, so he is to be mended and returned home. They were delighted to have him back, apparently.