Stinky the Snail

Stinky the Snail can be purchased at Crazy Dave's shop for $3,000 after the player unlocks the Zen Garden mode, and will slowly collect coins in the main Zen Garden area as long as he is awake. He will fall asleep after three minutes, however, and you must click him to wake him up again. He is only available in the Main Zen Garden and cannot be transported between gardens.

Feeding Stinky the Snail Chocolate will make him go faster and keep him awake for about an hour. Chocolate is obtained randomly from zombies after Adventure Mode has been beaten at least once and Stinky has been purchased. The best way to make money using chocolate is to tend to your other gardens first, then feed him chocolate.

He is originally from the Insaniquarium game (which Zombiquarium is based off of, and which the creator of Plants vs. Zombies also made), made by PopCap Games and Flying Bear Entertainment, in which his role is also collecting coins for the player. As of E3 2011, Stinky the Snail is the "cutest" Xbox 360 game animal.

Trivia

 * You can feed Stinky Chocolate while he's asleep. If you feed it to him while he's asleep, he'll wake up and get the energy from the Chocolate.
 * When you feed Stinky chocolate, you may leave your game open and he will collect coins for 1 hour without falling asleep. This is a good way to make money.
 * Stinky the Snail can't be used in other gardens.
 * On the DS version, Stinky doesn't move quite fast enough to collect coins, and Chocolate won't make him much faster.
 * Stinky and the Crows are the only non-zombie animals in the game.
 * Stinky is actually mindcontrolled by the Chocolate, as the sounds file of the sound of you feeding it is called "mindcontrolled.wav" (a more probable explanation is simply that 'mindcontrolled' was the name of the original sound file in whichever sound library it was that they used, and they just never bothered to change its name).