This looks like a Blue Russian. I had one about a hundred years ago. he would demand that you pet him, but only three times! then he would grab your hand in his teeth and hold it there before he got up and left.
The black-footed cat (Felis nigripes) is the smallest African cat, and is endemic in the south west arid zone of the southern African subregion. It is one of the lesser studied African carnivores, and is listed as Vulnerable by IUCN since