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  • Ten Deadeliest Animals. Number 10. Hippopotamus - kill 500 people a year

  • Weighing up to three and a half tons and with slicing teeth, when roused hippos can sprint towards their enemies at 20 miles an hour.

  • People living in rural Africa are most at risk, with many attacks caused when females feel their young are under threat.

  • Number 9. Tapeworm - kill 1,200 people a year

  • Often consumed when eating undercooked meat, tiny tapeworms can cause cysticercosis.

  • Often found in pigs, tapeworm eggs enter the body on pork products before hatching.

  • Larvae then travel through the body, infecting the central nervous system.

  • One of the most common causes of epilepsy in developing countries,

  • the disease can result in blindness, seizures and dementia.

  • Number 08. Scorpion - kill 3,250 people a year

  • With 50 varieties of scorpions posing a threat to humans, an estimated 1.2 million people receive stings each year,

  • with over three thousand dying from the arachnidsdeadly punch.

  • Symptoms including convulsions and frothing at the mouth can occur just 4 minutes after being stung.

  • One of the most deadly scorpions on Earth is the Arabian fat-tailed scorpion,

  • whose victims can die within just 7 hours if untreated.

  • Number 07. Assassin Bug - kill 13,000 people a year

  • The so-called 'Kissing Bug' attacks humans while they sleep, sucking blood from the face before leaving feces near the wound.

  • Parasites left behind get into the wound, traveling to the heart where they slowly damage it for up to 20 years.

  • The fourth biggest killer in Latin America, 30% of people infected with so-called Chagas disease

  • will eventually develop heart disease, potentially resulting in cardiac arrest.

  • Number 06. Tsetse Fly - kill 30,000 people a year

  • Found solely in Africa, the tsetse fly leaves behind a parasite that infects its host with Sleeping Sickness.

  • The disease triggers a series of feverish symptoms, until the parasite invades the Central Nervous System.

  • Sufferers become confused, often struggling to walk and talk.

  • Attacking the brain and other vital organs, the parasites cause mental impairments, comas, and heart failure.

  • Number 05. The dog - kill 54,450 people a year

  • Despite high-profile news reports of dogs mauling people to death,

  • the most common cause of dog-related deaths is through the spread of rabies.

  • Once in the body, the virus makes its way to the spinal cord and brain.

  • Victims are prone to aggressive behavior, become sensitive to light, and develop a phobia of water.

  • The virus eventually kills through excitotoxicity, killing the nerve cells by overstimulating neurotransmitters.

  • This process can lead to traumatic brain injury and strokes.

  • 99% of rabies cases are caused by dog bites.

  • 04. Roundworm - kill 60,000 people a year

  • Entering the body through contaminated food, drink, and soil, roundworms cause the illness Ascariasis.

  • The worms move around the body, living in the intestines, throat and gut.

  • Victims often don't realize they are infected until they see the worms moving in their feces or vomit.

  • Causing a huge loss in appetite, many victims die from undernourishment.

  • Alternatively a mass of worms can collect in the intestines,

  • puncturing the organ and triggering a huge hemorrhage.

  • 03. Snakes - kill 100,000 people a year

  • Around 5 million people are bitten by a snake each year,

  • with 100,000 of these proving fatal and up to 300,000 bites leading to amputations and disabilities.

  • The venom can cause death in a number of ways,

  • from paralyzing the respiratory system to disrupting the blood system, resulting in fatal hemorrhages.

  • However, many snake-related deaths, particularly those in developing countries, go unreported, with many unable to seek medical help.

  • In parts of Africa 1 vial of anti-venom can cost the equivalent of several monthsincome.

  • 02. Freshwater Snail - kill 200,000 people a year

  • Nicknamed 'snail fever', schistosomiasis is a disease carried by freshwater snails.

  • Humans are infected by the illness when larvae that live on the snail shells enter their bodies while they swim in contaminated water.

  • The outcome of an infection can vary dramatically.

  • While some parasites tear the bladder of their victims - leading to bladder cancerothers tear the abdomen, leading to colossal bleeding.

  • However, the most common causes of death are kidney failure and excessively vomiting blood.

  • 01. Mosquitoes - kill 755,000 people a year

  • Having already killed half of the people who ever lived, the malaria virus is spread through the mosquitoesdeadly bite.

  • Infected mosquitoes pierce human skin to suck their blood, smothering the wound in parasite-ridden saliva.

  • These parasites invade the liver and bloodstream, destroying oxygen-carrying cells, thus preventing normal bodily functions.

  • Victims become feverish, their brains swell, and they slip into convulsions and comas.

  • Half of the world's population is at risk of dying from a mosquito bite, with one child killed every 60 seconds.

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Ten Deadeliest Animals. Number 10. Hippopotamus - kill 500 people a year

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Top 10 Deadliest Animals On The Planet

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    陳貞吟 posted on 2016/05/14
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