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Llama Conservation status Domesticated Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Artiodactyla Family: Camelidae Genus: Lama Species: L. glama Binomial name Lama glama (Linnaeus, 1758) Domestic llama and alpaca range Synonyms Camelus glama Linnaeus, 1758 The llama (Lama glama) is a domesticated South American camelid, widely used as a ...
The llama and alpaca are only known in the domestic state, and are variable in size and color, being often white, black, or piebald. The wild guanaco and vicuña are of a nearly uniform light-brown color, passing into white below. The vicuña and guanaco share an obvious family resemblance and may be difficult to tell apart at a distance.
The guanaco (/ ɡ w ɑː ˈ n ɑː k oʊ / ghwuah-NAH-koh; [3] Lama guanicoe) is a camelid native to South America, closely related to the llama. Guanacos are one of two wild South American camelids; the other species is the vicuña , which lives at higher elevations.
Research has shown that scores below twelve indicate color vision deficiency, and twelve or more correct indicate normal color vision, with 97% sensitivity and 100% specificity. The sensitivity of the Ishihara test varies by the number of plates allowed to pass, which can vary by institutional policy.
The diameter of llama wool's fiber varies between 20 and 80 micrometers, depending on whether the llamas were raised for its wool or as a pack animal. The guanaco ( Lama guanicoe ) is a wild camelid, standing at 100–120 cm (39–47 in) at the shoulder [ 6 ] and 150–160 cm (59–63 in) at the head.
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The four pigments in a bird's cone cells (in this example, estrildid finches) extend the range of color vision into the ultraviolet. [1]Tetrachromacy (from Greek tetra, meaning "four" and chroma, meaning "color") is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cell in the eye.
The apparent "eye color" in these animals is red or black. [4] Certain groups such as box jellyfish have more complex eyes, including some with a distinct retina, lens, and cornea. [5] Many snails and slugs also have ocelli, either at the tips or bases of their tentacles. [6] Some other gastropods, such as the Strombidae, have much more ...