Poisonous snakes can surely cause fear and some of the most negative feelings towards some this crawling part of the animal world. The toxic secretion of poisonous snakes is so deadly that it can kill one in no more than thirty minutes, not to mention the risk of getting blind if any of the toxins are sprayed into the eyes. In spite of the risk of getting bitten in close encounters, poisonous snakes are creatures like all others but rely on their venom to survive: snakes only bite to hunt or defend themselves . The rest of the negative aura surrounding snakes results from an obtuse perception triggered by ancient myths.

The composition of the venom secreted by poisonous snakes is very complex: there is mainly a combination of proteins and toxins that when spread in the prey's body paralyze and eventually kill it. The toxin weakens the heart, the lungs and the muscles first, and depending on this action mode scientists have identified poisonous snakes into kind that destroy the walls of the blood vessels and cause unstoppable hemorrhage, venomous species that paralyze the heart and, last but not least, others that only cause terrible muscle pain. Corals and cobras would thus occupy the first positions in a top of the most poisonous snakes.

The complex structure of the snake venom still fascinates scientists, and lots of tests are still conducted on it. The only treatment for poisonous snakes bites is the immediate administration of antivenins. There are however some factors that increase or decrease the victim's chances of survival: thus, knowing the type of snake that caused the bite and its exact location prove crucial. If too much time lapses between the moment of the bite and the antidote injection, the victim will suffer extensive health damage or even die. Furthermore, there have been cases of patients who developed instant allergies to poisonous snake bites or to antidotes and died.

Rattlesnakes are the most common poisonous snakes in America, and they are the ones to cause most of the bites, yet death from such accidents is a rarity these days since medical help is usually very readily available. The water moccasin, the copperhead and the cottonmouth belong to the same poisonous family as the rattlesnake; they are highly poisonous snakes too that would surely mark the days of anyone who gets bitten. Stressful incidents involving snake attacks are often behind snake phobia or this excessive fear can have roots in sociological ancestral traditions that are manifest even with people who have never come across a snake in their life.

The snake is also a mythical representation not just an animal people feel afraid of. The representations of snakes in our arts and cultures draw their roots from the ancient mythical times. Thus, regardless of the types of snake varieties, we are talking about important elements of ecosystems, with a well-established role in the development of certain species, and secondly they are figurative spokesmen of profound meanings. Their feeding on mice and rats limits the risk of pest and prevents the over-breeding of these rodents. Yet, in the very old traditions, types of snake worshiping were part of religious rites, with the serpent symbolizing deities, or the eternal circle of life and death or wisdom.

Many types of snake-related traditions have been identified everywhere in the world: for the ancient Greeks the snake represented the a sign of sexual potency; Mesopotamians and Semites considered this animal immortal because it shed its skin and it rejuvenated its appearance periodically; Indians, Siamese and Burmese believe the snake to be a demon figure that also had its good parts.

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