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Sloth, related to slow, literally means "laziness", ... Size comparison of various ground sloths compared to a human, including Megatherium americanum (A, ...
Ground sloths varied widely in size from under 100 kilograms (220 lb) in the Caribbean ground sloths, to 3,700–4,100 kilograms (8,200–9,000 lb) in the largest ground sloth genera Megatherium, Lestodon and Eremotherium. [8] [9] The bodies of ground sloths were generally barrel-shaped, with a broad pelvis. [10]
Three-toed sloths are about the size of a small dog or a large cat, with the head and body having a combined length of around 45 cm (18 in) and a weight of 3.5–4.5 kg (8–10 lb). Unlike the two-toed sloths, they also have short tails of 6–7 cm (2–3 in), and they have three clawed toes on each limb.
The type species, M. jeffersonii (also called Jefferson's ground sloth), the youngest and largest known species, measured about 3 meters (9.8 ft) in length and weighed up to 1,000 kilograms (2,200 lb).
Megatherium is part of the sloth family Megatheriidae, which also includes the closely related and similarly giant Eremotherium, comparable in size to M. americanum, which was native to tropical South America, Central America and North America as far north as the southern United States.
Long ago, there was a dramatic uptick in the pace of sloth evolution. In addition to growing to substantial sizes, fossils suggest some could walk on two legs and others developed foot-long claws.
The brown-throated sloth is of similar size and build to most other species of three-toed sloths, with both males and females being 42 to 80 cm (17 to 31 in) in total body length. The tail is relatively short, only 2.5 to 9 cm (1.0 to 3.5 in) long.
The more moths that make the sloth fur their home, the more the algae can grow, and the greener the sloth fur becomes. The sloth has a perfect disguise, and the algae and the moths have a perfect ...