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All bovids have four toes on each foot – they walk on the central two (the hooves), while the outer two (the dewclaws) are much smaller and rarely touch the ground. [ 3 ] The bovids show great variation in size: the gaur can weigh more than 1,500 kg (3,300 lb), and stand 2.2 m (87 in) high at the shoulder. [ 27 ]
Hippopotamidae is a family of stout, naked-skinned, and semiaquatic artiodactyl mammals, possessing three-chambered stomachs and walking on four toes on each foot. While they resemble pigs physiologically, their closest living relatives are the cetaceans .
[2] [3] [4] Animals have been selected so that each number from 0 to 55 leg pairs has one example listed. Each of these examples is listed by a number closely associated with the relevant taxon, either because that number is the one most commonly observed in that taxon or because it is one of only a few numbers recorded for the taxon.
Wildebeest have developed additional sophisticated cooperative behaviours, such as animals taking turns sleeping while others stand guard against a night attack by invading predators. Wildebeest migrations are closely followed by vultures , as wildebeest carcasses are an important source of food for these scavengers.
Their dental formula is also unique: 2.1.3.3 1.1.3.3 [22] Unlike many nocturnal vertebrates, tarsiers lack a light-reflecting layer (tapetum lucidum) of the retina and have a fovea. The tarsier's brain is different from that of other primates in terms of the arrangement of the connections between the two eyes and the lateral geniculate nucleus ...
Something about the 2-foot-long animal caught the attention of visiting scientists — and for good reason. It turned out to be a new species.
Three-toed fossil footprints that date back more than 210 million years were pressed into soft mud by bipedal reptiles with feet like a bird’s, a new analysis of the tracks has revealed.
5 - salivary ducts, 6 - oesophagus, 7 - stomach. Drawing of the digestive system of carnivorous Schizoglossa novoseelandica, showing the large pharynx. 1-2 - buccal mass, 1 - mouth, 2 - pharynx, 3 - retractor muscles of the pharynx, 4 - salivary glands, 5 - salivary ducts, 6 - oesophagus and stomach, 7 - intestine, 8 - hepatic ducts.