There are large feral cat populations all over the med and canaries. I think we've all seen them slinking around the bars and tables at night begging for food
I always go for a morning run on the beach when on hols and I've also seen many locals feeding them early in the morning too.
The kittens usually look good as mum is looking after them, but as they get older they look quite bad. The males from fighting and the girls from constant breeding.
Ian.