Blood

Blood is a rather infamous cheat available in Fur Fighters: Viggo's Revenge. The cheat can be obtained by shooting all the Rabbits in Fur Fighter Village after you have defeated General Viggo at his lair.

Once activated, the cheat turns fluff into blood. A lot of blood.

Trivia

 * The cheat will only work on a PAL copy of the game. It exists in the NTSC version too, but nothing will happen after activation. The reason for its removal was due to US censor laws.
 * If a bears head is shot off, blood will spray out from it, just like with fluff.