Why does it seem that there are different types of Pygmy goats? Some are taller and have different heads than others I have seen.

Just as in any animal, let the buyer beware. I have seen many smaller goats sold as “pygmy” goats that are actually Pygora goats or some mixture of Pygmy and other goat breeds. Pygmy goats are a distinct breed of goat, and the only way to be sure that you are getting a true Pygmy goat is to buy registered goats from a reputable breeder. Also, within Pygmy goats, there are many different-looking goats, depending on the quality of breeding stock and how much effort the breeder is making to breed animals that look like the breed standard established by the National Pygmy Goat Association (NPGA).