Here are some cheats and tips for the game Tom And Jerry: War Of The Whiskers.
Unlimited ammunition:
Press B, X, B, Y, A, X, A(2) at the title screen.
Unlimited health:
Press A, B, A, Y(2), X, B, Y at the title screen.
Once you or a CPU dies, your/their health bar
replenishes to the maximum.
All arenas:
Press Y, B, Y(2), A, X, B, X at the title screen.
All costumes:
Press B(2), A, X, B, Y, A, B at the title screen.