Spanish Goats
This breed-type has developed through natural selection from goats first placed in Texas in the early 1540s by Spanish explorers. Survival of the fittest insured that the breed became hardy, good foragers and good mothers.
Although scattered across much of the United States, most Spanish goats are located in Texas, and breeders in that state have been responsible for its improvement and recognition. Spanish goats can be any color or color pattern. They are moderate in size and growth rate. They are especially tolerant of difficult conditions and forage well on local plants. Spanish does are prolific and produce enough milk for moderate growth rates of the kids. They are believed to be relatively tolerant of internal parasites.
Source and for more information visit: https://goats.extension.org/goat-breeds-spanish/