Tom And Jerry: War Of The Whiskers Cheats

Unlimited health:
Press A, X, A, Y(2), B, X, Y at the title screen. Once you or a CPU dies, your/their health bar replenishes to the maximum.

Unlimited ammunition:
Press X, B, X, Y, A, B, A(2) at the title screen.

Every arena:
Press Y, X, Y(2), A, B, X, B at the title screen.
User Cheat by Zurich

All costumes:
Press X(2), A, B, X, Y, A, X at the title screen.

Unlock Butch:
Finish challenge mode as Tyke.
User Cheat by doggiebag

Unlock Ducking:
Finish challenge mode as Nibbles.

Unlock Lion:
Finish challenge mode as Butch.

Unlock Nibbles:
Finish challenge mode as Spike.

Unlock Spike:
Finish challenge mode as Tom.

Unlock Tyke:
Finish challenge mode as Jerry.

Disable Robot Cat:
Finish challenge mode as Lion.