Registering Llamas
Nearly all llamas and alpacas in the United States are registered with the International Lama Registry (the ILR or the Registry in this discussion). This is a "closed" registry, which means that if you wish to register a llama, both of its parents must have been registered with the ILR. At the time that the Registry "closed" its books, it was estimated that over 90% of the female llamas and over 80% of the male llamas currently in the US were registered.
Visit the Llama Registry website for all kinds of information about the llama population in the United States, lists of llama farms, and a lot more.