Giraffes evolved relatively late, probably about 25 million years ago in the lower Miocene, from a branch of the even-toed ungulates, which was also to produce cattle, antelopes (Bovidae), and deer (Cervidae). Giraffes rely on their height and vision to spot predators and will defend themselves by kicking, but a pride of lions can take even a mature, healthy bull. Giraffe are not territorial, but have ranges that can dramatically vary between — 5 and 654 kmA family of mammals belonging to even-toed ungulatesA paraphyletic grade of palaeotragines ancestral to Sivatheriinae. Okapis, thought of as forest giraffes, require a quite different habitat of dense, moist, tropical lowland forest. Giraffes are non-territorial, but do have home ranges that can vary enormously in size, from 2 to 252 miOkapis live mainly solitary lives, or in mother-offspring pairs, although ephemeral groupings are occasionally seen feeding together at prime food sites. They reach adult size after three years. A heavy blow to the underbelly of an opponent can cause considerable damage. Giraffes evolved relatively late, probably about 25 million years ago in the lower Miocene, from a branch of the even-toed ungulates, which was also to produce cattle, antelopes (Bovidae), and deer (Cervidae). See more ideas about Okapi, Animals, Giraffidae. It is still common in east and southern Africa, but populations have fallen dramatically in West Africa, through over-hunting and habitat degradation.
The Giraffidae are a family of ruminant artiodactyl mammals that share a common ancestor with cervids and bovids. Nights are mostly spent lying down, ruminating. A female giraffe is only likely to be out of sight of another female when calving, whereas mature males wander more widely in search of estrous females. Okapis are normally seen in mother-offspring pairs, although they occasionally gather around a prime food source. Male giraffes can be 16-18 feet tall and weigh up to 2,000 pounds.
It used to be found from Senegal to The giraffe has been revered by African cultures for millennia—it is depicted in early cave paintings and in ancientThe okapi was unknown to Western science until 1900.
Single calf born after 15 month gestation.
Their characteristic splay-legged, bent-kneed pose when drinking was thought to be necessary because of their long necks, but okapis adopt a similar pose, which suggests this is not the explanation. Both are confined to sub-Saharan Africa: the giraffe to the open savannas, and the okapi to the dense rainforest of the Congo. The giraffe's scientific name, The giraffe's unique evolutionary design has required adaptations of its circulatory and respiratory systems.
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A large bull giraffe, with a neck joint that allows its head to be extended vertically, can reach foliage 19 ft (5.8 m) high. Estimated at 30,000 in wild. They belo… The common or river hippopotamus (Hippopotamus amphibius) is a huge, even-toed hoofed herbivore that lives in bodies of freshwater in central and sou… Proboscis monkey Females slightly taller than males.
The head of a giraffe bull gets heavier throughout its life, as it develops protective bony deposits, and can weigh 66 lb (30 kg) by age 20. The female is initially aggressive, while the male asserts dominance by extending his neck, tossing his head, and thrusting one leg forward. Males compete for mating rights from age seven, but older, larger males have a strong advantage, and by the time a female in estrus is ready to mate, the local dominant male has usually asserted his rights without having to fight.A male giraffe follows an estrous female closely, keeping other males away. After initially proving evasive, the female will circle, hold her tail out, and stand in a mating attitude to invite mounting.Gestation lasts about 15 months, before a single calf (very rarely twins) is born, often in a favored calving ground.
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