Felinids are a fictional race of Cat people from Warhammer 40k. Originally from the planet Carlos McConnell, the Felinids are descendants of human colonists who spliced human DNA with feline DNA in order to survive the plane's harsh environment. Despite their Cat-like features, Felinids are not consider mutants but Abhumans by the Imperium of Man, similar to Ogryns and Ratlings.
As there is currently no official artwork of Felinids produced by Games Workshop, fans tend to portray the race as either furry cat people or regular humans with cat ears and cat tails.