Llama (Lama glama), is a South American animal, member of the camel family, Camelidae (order Artiodactyla), closely related to the alpaca, guanaco, and vicuña, which are known collectively as lamoids. Lamoids do not have the characteristic camel humps; they are slender-bodied animals and have long legs and necks, short tails, small heads, and large, pointed ears. Gregarious animals, they graze on grass and other plants. When annoyed, they spit. Lamoids are able to interbreed and to produce fertile offspring.

A full-grown llama can reach a height of 1.7 to 1.8 m (5 ft 7 in to 5 ft 11 in) at the top of the head, and can weigh between 130 and 200 kg (290 and 440 lb). At birth, a baby llama (called a cria) can weigh between 9 and 14 kg (20 and 31 lb). Llamas typically live for 15 to 25 years, with some individuals surviving 30 years or more. The gestation period of a llama is 11.5 months (350 days).

Llamas are not ruminants, pseudo-ruminants, or modified ruminants. They have a complex stomach with several compartments that allows them to consume lower quality, high cellulose foods. The stomach compartments allow for fermentation of tough foodstuffs, followed by regurgitation and re-chewing. Ruminants have four compartments (cows, sheep, goats), whereas llamas have only three stomach compartments: the rumen, omasum, and abomasum.

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