Saturday, September 21, 2013 How Much Do You Know About Alpacas?Several west-side farms are among the hundreds in North America participating in National Alpaca Farm Days the weekend of Saturday, Sept. 28 and Sunday, Sept. 29.The free event aims to educate the public about alpacas — animals that are cousins to the llama and native to the Andes mountains in South America.The United States first commercially imported alpacas in 1984, and there are now more than 160,000 registered alpacas in North America, including 19 at SanGer-La Alpac