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  2. Giraffe - Wikipedia

    en.wikipedia.org/wiki/Giraffe

    The giraffe has an extremely elongated neck, which can be up to 2.4 m (7 ft 10 in) in length. [60] Along the neck is a mane made of short, erect hairs. [17] The neck typically rests at an angle of 50–60 degrees, though juveniles are closer to 70 degrees.

  3. Gerenuk - Wikipedia

    en.wikipedia.org/wiki/Gerenuk

    It is characterised by its long, slender neck and limbs, the flat, wedge-like head and the large, round eyes. Males are nearly 89–105 cm (35– 41 + 1 ⁄ 2 in) tall, and the shorter females 80–100 cm (31–39 in); the head-and-body length is typically between 140 and 160 cm (55 and 63 in). Males weigh between 31 and 52 kg (68 and 115 lb ...

  4. Focus on research: Female giraffes drove the evolution of ...

    www.aol.com/news/focus-research-female-giraffes...

    A Penn State researcher has been trying to get to the bottom of the age-old question of why giraffes have long necks. Skip to main content. 24/7 Help. For premium support please call: 800-290 ...

  5. Lamarckism - Wikipedia

    en.wikipedia.org/wiki/Lamarckism

    The long neck of the giraffe is often used as an example in popular explanations of Lamarckism. However, this was only a small part of his theory of evolution towards "perfection"; it was a hypothetical illustration; and he used it to discuss his theory of heredity, not evolution. [2]

  6. Giraffidae - Wikipedia

    en.wikipedia.org/wiki/Giraffidae

    The okapi's neck is long compared to most ruminants, but not nearly so long as the giraffe's. Male giraffes are the tallest of all mammals: their horns reach 5.5 m (18 ft) above the ground and their shoulder 3.3 m (11 ft), whereas the okapi has a shoulder height of 1.7 m (5 ft 7 in). [9]

  7. Okapi - Wikipedia

    en.wikipedia.org/wiki/Okapi

    The okapi and the giraffe are the only living members of the family Giraffidae. The okapi stands about 1.5 m (4 ft 11 in) tall at the shoulder and has a typical body length around 2.5 m (8 ft 2 in). Its weight ranges from 200 to 350 kg (440 to 770 lb). It has a long neck, and large, flexible ears.

  8. Sexual selection in mammals - Wikipedia

    en.wikipedia.org/wiki/Sexual_Selection_in_mammals

    Moreover, the giraffe's kudu, impala, and steenbok competitors do not feed above 2 meters and prefer feeding at shoulder level as well, rather than at the maximum height they could reach. [14] An alternative explanation for the origin of long necks in giraffe is sexual selection. Male giraffe often neck with other males to exhibit dominance. [15]

  9. Adaptation - Wikipedia

    en.wikipedia.org/wiki/Adaptation

    As another example, the long neck of a giraffe brings benefits but at a cost. The neck of a giraffe can be up to 2 m (6 ft 7 in) in length. [83] The benefits are that it can be used for inter-species competition or for foraging on tall trees where shorter herbivores cannot reach.