Small udders were essential. Large udders would be cut up by cactus, thorns, rocks and any number of other obstacles. Although not of a specific breed ancestry they have developed through natural selection. The term has also become used to describe any goat of unknown ancestry. Most are wild or at least semi-wild.
Size varies greatly due to climate, terrain and available breeding stock.
Body shape, ear shape, horns, hair and color are not consistant. Traditionally, in the United States goats have not been considered as a meat source. Ethnic groups have increased in the last few years from areas where goats are a staple in their diet. These recent groups have had the money and influence to attract the owners of wild goats. These owners have begun to change their strategy regarding their goats.