Press ~ (tilde) while playing to display the console.
Use one of the following codes to cheat.

Makes a map on screen that show animals and players positions:
ai_drawmap = 0 or 1

Turns off map on screen that show animals and players positions:
ai_drawmap = 0 or 0

Makes animals stay motionless:
bgh_animal freeze = 0 or 1

Get money:
bgh_needMoney

Unlock all levels:
bgh_unlockLevels