Many homeowners can raise livestock in their own backyard. It is easier and more feasible than you might think. A small flock of backyard chickens can be hygenically raised in a small area. Fresh eggs are a great addition to your garden produce. The chicken manure will also increase your garden's productivity.
Miniature livestock is another great option for the the backyard farmer. Raising miniature goats requires no more land than is necessary for an average sized dogs. Miniature goats can also produce big yields. Although small in stature, a healthy Nigerian Dwarf goat doe can produce up to two quarts per day of sweet milk. Nigerian goat milk is also higher in butterfat (6-10%) and higher in protein than milk from most dairy goat breeds.
Every city and county is zoned differently. You might be suprised to discover the areas where backyard livestock is allowed. So, be sure to check zoning for livestock in your area.