why do some snakes have stronger..

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Answers: Evolution, it all depends on their diet and surroudings Snake venom is one of the most amazing and unique adaptions of animal evolution. Veno.. 

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Evolution, it all depends on their diet and surroudings Snake venom is one of the most amazing and unique adaptions of animal evolution. Venomous serpents have developed one of the most effective and efficient weapon systems of the animal kingdom. What is snake venom and how does it work? Venom is a prey-immobilizing substance in snakes that is used secondarily as a defense system. Venom is not composed of a single substance, but is a toxic saliva consisting of a complex mixture of chemicals called enzymes. Almost all venoms are composed of approximately 90% proteins. Two general types of toxins are known, neurotoxins and hemotoxins. Neurotoxic venom attacks the victim's central nervous system and usually result in heart failure and/or breathing difficulties. Cobras, mambas, sea snakes, kraits and coral snakes are examples of snakes that contain mainly neurotoxic venom. Hemotoxic venom attacks the circulatory system and muscle tissue causing excessive scarring, gangrene, permanent disuse of motor skills, and sometimes leads to amputation of the affected area. The Viperidae family such as rattlesnakes, copperheads, and cottomouths are good examples of snakes that employ mostly hemotoxic venom. Some snakes contain venom that contains combinations of both neurotoxins and hemotoxins.

There are approximately 20 types of toxic enzymes found in snake poisons throughout the world known to man. Although no venomous snake has all of these toxins, most snakes employ between six to twelve of these enzymes in their venom. Each of these enzymes has its own special function. Some aid in the digestive process, while others specialize in paralizing the prey. Scientists believe they have identified the following chemicals from snake venom and the specific purpose of each as follows: