Barnyard Cheats - GameCube
Primary Collection of Cheats
Cheat codes
At the title screen press and hold [L] and [Z] and enter the following while still holding those buttons:
[A], [A], [X], [X], [X], [X], [Y], [X] - 9,999 Gopher Bucks
[A], [A], [Y], [B], [X], [X], [B], [Y] - All Knapsack and Flower pack items
[Y], [X], [A], [B], [B], [A], [X], [Y] - Unlock all Antics
[Y], [B], [A], [X], [X], [A], [B], [Y] - Unlock all bonus items