Crazy Katz is a character that he also is Crazy Dave's pet. It's kind of obvious he is a cat and he leaves in Crazy Wuff, Crazy Dave's dead dog house.
How to find himEdit
In ZomBotany Mode, You can find him by killing a peashooter Zombie (Which, it's obvious that it's the worst way to find him). Also you can find him in a random Vase of Vase Breaker (Except in Endless mode) or in a eaten plant in I, Zombie. (If you found it there you must have eaten the lane, or if you haven't, you better restart the whole level, because if you send another zombie, it will eat him and then the zombie will pass through him).
Crazy Katz is a black cat with yellow eyes. He's tail is colored white (Crazy Dave Painted it!).