Using this Trainer:

Launch the trainer first, then launch the Game and then Press F1 at the Main Menu.

Listen for "Activated".

Press desired option key

Options in Promo:

Numpad 1: Food

Options:

Numpad 1: Food

Numpad 2: Mega Animal

Numpad 3: Unlimited Moves

Notes:

Numpad 1: Food - when the game is going and you see your food count at the bottom right, press this to set it higher.  Toggle off once you have the food.

Numpad 2: Mega Animal - when the game is going, click on one of your animals. Note the values in the lower left of the screen for that animal's stats. Press this option and note that the stats are changed.  Toggle off once you have made the change.  This WILL affect ALL animals, so make sure you turn this off before clicking on animals you do not wish to affect.

Numpad 3: Unlimited Moves - when the game is going, toggle this on and when you move animals or make them do things, you can keep going.