you can also buy my book of alpacas in amazon, the book includes a section to differentiate llamas and alpacas, link here:

https://www.amazon.com.mx/gp/product/B07G3S6SB9/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B07G3S6SB9&linkCode=as2&tag=alpacas05-20&linkId=65e88cbbd378d2dc2742bf9bfcba46ed