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CROCODILO – UM PREDADOR A ESPREITA DAS GIRAFAS
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O crocodilo-do-nilo (Crocodylus niloticus) é um réptil que se alimenta de grandes animais, incluindo girafas, quando elas se abaixam para beber água...
Nota: Quando foi inaugurado o Aquário do Zoológico de Berlim sua principal atração foi a "Casa dos Crocodilos", a qual foi bombardeada durante a Segunda Guerra Mundial...
Blocos com e sem picotagem da República Centro-Africana que mostram o crocodilo-do-nilo...
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Ethiopian: The Nile crocodile is found in Africa and on some islands, including Madagascar. The Nile crocodile was eradicated long ago in Palestine and Egypt and now cannot be found below the second cataract of the Nile.
They are widespread throughout southern Africa but are absent in the northwest and Sahara regions as well as in the extreme southern portions of South Africa.
Máximo postal emitido pela República do Burundi que mostra crocodilos-do-nilo.
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Mass: 272 to 910 kg.
The Nile crocodile, like all crocodilians, is characterized by a lizardlike shape and a scaly hide (which is highly sought after by poachers). Their skin, unlike that of most reptiles, grows with them and is not shed. It ranges from drab green or brownish to a blackish tone on the dorsal side and is much lighter, and softer, on the ventral surface.
O selo (abaixo) foi emitido em uma série de 4 por Israel, em 22/02/2005, sobre alguns animais citados na Bíblia: avestruz, urso marrom, lobo e crocodilo do Nilo (página religiões).
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There is virtually no way to distinguish the gender of a crocodile at a glance. The male has a penis, but it portrudes from a slit in the skin only during mating.
Crocodiles can be distinguished from alligators by their long narrow snout and their fourth mandibular tooth, which portrudes from their lower jaw rather than fitting in to their upper jaw.
The eyes and nostrils of crocodiles are situated on the top of the head so they can see and breathe while the rest of their body remains almost totally submerged. Unlike other reptiles, crocodiles have external ears that close, along with the nostrils, when they dive.
Another feature that helps the crocodile survive in the water is its third eyelid, the nictating membrane. When a crocodile dives, it closes its transparent nictating membrane to keep water out of its eyes without sacrificing its vision. Crocodiles swim using their enormous, oar-like tail.
Only their rear feet are webbed, and they are rarely used in movement underwater. On land, the crocodile walks on its short, seemingly weak legs. They bring their legs in close to their bodies and lift themselves high off the ground when walking. They have even been observed "galloping," as a rabbit does.
They plant their front feet, bring their hind legs around the outsides of the front legs, plant them, and then lunge forward with their front legs. Nile crocodiles have been known to reach speeds of up to 29 miles per hour.
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Última atualização: 01/11/2007. |
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