Get Me This Kitten!!

The title of the video refers to the dog befriending the disabled cat, but it seems more like a dog who has decided he can't, based upon some mysterious Dog and Cat Code, eat a disabled cat. Which brings me to my real point: I've never even seen or heard of a disabled cat (or dog). Is this common?

No offense to the Family Cat, but I'd take that little thing over my uppity Siamese feline any day of the week.