Alpacas are social animals that enjoy living in herds, so when considering how many acres you need for alpacas, it is important to take their social needs into account. A good rule of thumb is to have at least two acres of land for every alpaca. This will give them enough space to graze and explore, and it will also help to prevent territorial disputes. Additionally, alpacas are relatively low maintenance animals, so you will not need to provide them with specialized housing or equipment.