What sthe difference between a llama and a alpaca?:D

Differences in the alpaca and llama (http://www.owning-alpaca.com/alpaca-and-llama.html)

Basically an alpaca is half the size of a llama.

Alpacas were domesticated (like goats, sheep, and cows) thousands of years ago from an animal that no longer exists, something like a vicuna.

Llamas are larger and wild, not domesticated.