Disemboweler 2000
At the hunting screen where you see the animals type: BGBARBECUE to obtain the Disemboweler 2000.

Invisible to Animals
Go to the map screen and type "bgurine". The animals will no longer sense your presence.

Quicker Tracking
Go to the map screen and type "bgtrack".

Reveal All Animals
Go to the map screen and type "bgshow" to reveal all animals.

Show Hit Animals
To instantly locate any animal you've shot, go to the map screen and type "bgvampire".

Turns distance bar red
In the overhead map view type "bgbloodtrail".

Change the weather
While hunting type bgweather and watch the weather change. Note: you have to wait a while for the code to load into your Mac.