Uh wtf is your problem? Kitten is term for baby cat like it is for baby human is infant.
DUH! So Max was baby cat, kitty, kitten simple as that.... seriously what's your deal? You're acting like I'm calling my cat chinese food or something, sheesh and it wasn't "kitten maybe" all cat were kitten when they were born they begin their life as a baby and grew up to be adult cat just like every living thing in world