Fun fact: there are six extant camel species under four genera: the Vicuna (Vicugna vicugna), the Alpaca (Vicugna pacos), the Guanaco (Lama guanicoe), the Llama (Lama glama), the Dromedary (Camelus dromedarius), and the Bactrian Camel (Oreocamelus bactrianus).
Llamas do not fight of predators... they alarm to let the shepherd know to co e take care of it. Suri llamas have "bangs" alpacas are 120 to 150 pounds. Special diet needs.