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The chinchilla has the densest fur of all extant terrestrial mammals, with around 20,000 hairs per square centimeter and 50 hairs growing from each follicle. [7] The chinchilla is named after the Chincha people of the Andes , who once wore its dense, velvet-like fur and ate their meat. [ 8 ]
Pachycephalosaurus is the largest-known pachycephalosaur, known for having an extremely thick, slightly domed skull roof; visually, the structure of the skull suggests a ‘battering ram' function in life, evolved for use as a defensive mechanism or intra-species combat, similar to what is seen with today's bighorn sheep or muskoxen (with male ...
It weighs 28–54 kg (62–120 lb) and its length is 0.84–1.1 m (2 ft 9 in – 3 ft 7 in) with a 0.80–1.0 m (2 ft 7 in – 3 ft 3 in) tail, standing approximately 1.3 m (4 ft 3 in) tall. [7] It exhibits sexual dimorphism with the male up to twice the size of female. It has thick, coarse fur with colour ranging from pale grey to brown; its ...
The common ostrich is the largest and heaviest living bird. Males stand 2.1 to 2.75 m (6 ft 11 in to 9 ft 0 in) tall and weigh 100 to 130 kg (220 to 290 lb), whereas females are about 1.75 to 1.9 m (5 ft 9 in to 6 ft 3 in) tall and weigh 90 to 120 kg (200 to 260 lb). [20]
The walrus has an air sac under its throat which acts like a flotation bubble and allows it to bob vertically in the water and sleep. The males possess a large baculum (penis bone), up to 63 cm (25 in) in length, the largest of any land mammal, both in absolute size and relative to body size. [5]
It has crucial effects on the ecology of wetlands, [2] and is a resource of food and fur for humans. Adult muskrats weigh 0.6–2 kg (1 + 1 ⁄ 4 – 4 + 1 ⁄ 2 lb), with a body length (excluding the tail) of 20–35 cm (8–14 in). They are covered with short, thick fur of medium to dark brown color.
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The tarsus is relatively small for the bird's size, at 8.8–10 cm (3.5–3.9 in). The proportions of the species have been compared to a falcon, scaled to an enormous size. [13] Unlike most vultures, the bearded vulture does not have a bald head. This species is relatively small-headed, although its neck is powerful and thick.