Kit-10

Kit-10 was a robot cat who, according to one account, the Fourth Doctor had instead of K9.

Kit-10 proved to be quite a handful for the Doctor and Sarah Jane Smith, frequently begging to be let out of the TARDIS only to just stand there when the Doctor opens the doors, set live Cybermats loose in inside the TARDIS, and scratching the Doctor up when he tried to get him into a cat basket to take him to the cyber vet. (NOTVALID: The Daft Dimension 588)