Monday, 29 March 2010

Time for lunch!

Fascinating animal.Hunger is a feeling experienced when the glycogen level of the liver falls below a threshold, usually followed by a desire to eat. The usually unpleasant feeling originates in the hypothalamus and is released through receptors in the liver. Although an average nourished human can survive weeks without food intake, the sensation of hunger typically begins after a couple of hours without eating and is generally considered quite uncomfortable.

Wildlife refers to all non-domesticated plants, animals, and other organisms. Domesticated organisms are those that have adapted to survival with the help of (or under the control of) humans, after many generations. Domesticating wild plant and animal species for human benefit has occurred many times all over the planet, and has a major impact on the environment, both positive and negative.

Crocodiles are very fast over short distances, even out of water. They have extremely powerful jaws capable of biting down with immense force, by far the strongest bite of any animal. The crocodile's bite force is more than 5,000 pounds per square inch, comparing to just 335 psi for a rottweiler, 690 psi for a large great white shark, or 800 psi for a hyena. They have sharp teeth for tearing and holding on to flesh, but cannot open their mouth if it is held closed, because the crocodile is evolved for biting down; the muscle space inside the skull is used up for muscle that closes the jaws...





































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