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Guanacos are the wild ones. They roam the open grasslands and mountains of Chile in herds, and they are brilliant at living where the air is thin and cold. They can run fast and even swim.
Llamas and alpacas are their tamed relatives, looked after by people for thousands of years. Llamas are bigger and strong enough to carry bags up steep mountain paths, like a woolly delivery helper. Alpacas are smaller and kept mostly for their super-soft wool, which is spun into cosy jumpers, hats and blankets.
All three are champions of cold places. Their thick coats trap warm air, a bit like wearing a duvet all the time. And if one feels annoyed, it might do something famous: spit! It is their way of saying 'please give me some space'.