The height of a full-grown, full-size llama is 1.7 to 1.8 m [5.5 to 6.0 ft] tall at the top of the head, and can weigh between 130 to 200 kilograms [280 to 450 lb]. At birth, a baby llama [cria] can weigh between 9 and 14 kilograms [20 and 30 lb].
The four forms commonly distinguished by the inhabitants of South America are recognized as distinct species are: llama [Lama glama], alpaca [Vicugna pacos], guanaco [Lama guanicoe] and vicuña [Vicugna vicugna]. The llama and alpaca are only known in the domestic state, and are variable in size and of many colors, being often white, brown, or piebald. Some are grey or black. The guanaco and vicuña are wild, the former being endangered.
The most apparent visual difference between llamas and camels is that camels have a hump or humps and llamas do not.