Goats have been kept domestically for about 8,000 years. Although they do eat a variety of foods, they are more discriminating eaters than traditionally thought -- they do not eat tin cans, paper, or fiber (angora and cashmere). Goats make good pets and are useful for clearing underbrush. There are a variety of breeds at Oxon Hill Farm, each with different characteristics. Their color can be white to dark brown or black, with or without patches of other colors. Some have horns, beards, or wattles on the neck; some do not. Some have all of these features; others have none. Easily identifiable breeds include the Nubian (large, floppy ears), LaMancha (nearly earless), and Saanen (all white). Goats usually breed from August through November. It takes the young 151 days (about 5 months) to develop before birth. Does usually have twins, sometimes triplets, in winter or early spring. An undesirable characteristic of mature bucks (adult males, but not wethers) is a strong musk odor that attracts does.