For millions of years, humans were nomadic, surviving as hunters and gatherers. Once we learned to domesticate animals and plant gardens, we could settle down, stay longer in one area and sustain larger populations. Our ability to raise livestock and garden are essential to our survival today no matter how good you are at Wilderness Survival.
When Christopher Columbus sailed from Cadiz in 1493 for his second voyage, he carried everything needed to colonize the New World including dogs, cats, chickens, horses, donkeys, cattle, pigs, sheep, rabbits and goats. While we should expect to need no less, there are a few that are perhaps more essential and practical than others are are.
After calculating your garden food requirements look at eggs, chicken, rabbit, goat, cows, pigs, fish, etc. to be sure you have enough meat to eat. Goats are the most popular meat around the world, especially in poor countries that live more sustainable lives. They are small (easily consumed before spoiling), hardy, can eat most anything and provide milk and meat. Once there is no feed store, goats will come in handy.
Here is our list of livestock covered in the Prepper Handbook with links to the ones covered here: