daddypa
Kooze
Koozer
Korbel
Korky
Kormi
Koro
Kosher
Koshi
Koshka (Russian for "kitten")
Kosmic
Kosmo
Kota
Koten
Kotyk (Ukrainian for "cat")
Kouros
Kow Kitty
Koy
Koyannisqatsi
Ko-Yo
Kozmo
Kp
Krabbelure
Kramer
Krazy
Krazy Kat
Kremhilde
Kribu (meaning "petite")
Kricket
Kriis-Riit
Krinkles