My friend has a cat that had kittens. He adopted a couple of them out, but kept two of them as they are physically disabled. We think that another cat got into where the kittens were and mauled them when they were very tiny. So they are very cautious, and pretty close to being feral because they are strictly outdoor cats. They do have a heated cat house, and are well fed and watered, but pretty much only come to my friend.
The female, Charity, has one hind leg that is missing a paw. Low Rider, the male, is missing both back paws. They both get around pretty good, but Rider keeps pretty close to home while Charity seems to be more adventurous in going off with her mother and their older half brother, Koala (I can never remember the mom cat's name!) If I am around, Mama is pretty shy but will come if you have food. Charity keeps her distance and will wait to get the food until I am further away. Koala has always been a social boy, and comes right away for loving, food or not! But Rider, who was initially as shy as Charity, seems to have accepted me as an okay person and comes out quite readily for some petting and he doesn't care if there's food any more! I was amazed this morning that he was by the lilac bushes and neither ran away nor came to me as he was busy checking out the grass. It made me happy that he's treating me like one of his people!