Sunday, 25 August 2013

Crocodiles & Snakes

Crocodiles

Crocodiles are large lizard like reptiles which can live in water and on land. The body of crocodiles are covered with a tough hide like skin with bony plates. The adult crocodiles are dull in colour but the young are brightly colored with dark brown spots or bar on the back. They are strictly carnivorous and live in lakes, rivers and estuaries, it is an excellent swimmer. The eyes have a transparent third eyelid permitting limited under water vision. It lays oval hard shelled eggs which are buried in the soil or in the nest of soil and vegetation for incubation. Parental care is in the form of guarding the nest by the female. They can live up to 70 years.

Snakes

Snakes are elongate, legless, carnivorous reptiles of the suborder Serpents that can be distinguished from legless lizards by their lack of eyelids and external ears Most species are non-venomous and those that have venom use it primarily to kill and subdue prey rather than for self-defense. Some possess venom potent enough to cause painful injury or death to humans. Non-venomous snakes either swallow prey alive or kill by constriction. Snakes are strictly carnivorous, eating small animals including lizards, other snakes, small mammals, birds, eggs, fish, and snails. Because snakes cannot bite or tear their food to pieces, they swallow whole prey. Snakes are found on every continent except Antarctica and on most islands.

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