Goats get a lot of blame for desertification in arid areas of the world, even though it's not their fault. Yes, their low-to-the-ground grazing style can deteriorate the grass during drought and their hooves can speed up the erosion process, but that's not their fault. Man should take the blame for desertification. This is because humans do not properly manage goats by allowing them to overgraze. Humans should instead place goats in situations that allow them to reach their potential as the best agricultural species for arid environments. 15. In primitive hot/dry agriculture, there are both fat-tailed sheep and fat-rumped sheep. Sheep fat acts as insulation and energy storage. As it is hot, insulation is not necessary, but energy storage is key for sheep. In these harsh, hot conditions, fat on the tail/rump can make up a quarter or a third of the sheep's total weight. This bundle of fat can allow the animal to survive much longer than if it were not present due to the energy it can get from it. 16. The most important deciding factor in the choice of animal species in developed agriculture is