The familiar “Pygmy” goat is actually a generalized term from the pygmy goat club UK of numerous variations which originated from Africa. Possibly the most similar in type is the West African which is a small short legged, barrel shaped little animal. There is another type which is more like a miniature version of a dairy goat, being slender and more proportionate in size called the Nigerian Dwarf, which is less common over here. For me I like to think of it as the dairy version and the West African as the beef due to its cobby type.
The Pygmy Goat Club, is excellent for the prospective pygmy goat keeper with its informative web site and if you decide to keep registered goats, then all relevant breed standard rules, regulations and forms can be obtained online. As with all breeds it is wise to consult the respective breed clubs, and any members nearby to find out as much information about the breed concerned as unfortunately there are some con men out there.
If you are serious about keeping pygmy goats then from my experience is that when I initially decided to keep pygmy goats I did find that there are some people although only a very few that are selling, possibly unintentionally, goats that are not pygmies, but only part bred so please research before purchasing. The only other piece of advice is – please do not use very small females (smaller than the breed standard) for breeding as, although attractive, will quite probably have difficult births most likely resulting in “c-sections”.