11Infant procedure
It wasn't until 1987 that the American Academy of Pediatrics declared it unethical to operate on newborns without anesthesia. Until surprisingly recently, the medical community felt it would be dangerous to give infants anesthesia and/or believed that they didn't feel pain.
12Black mamba
A black mamba is the fastest snake which can slither at a speed of 12.5 miles an hour (20km/hr). They have neurotoxins that are fast-acting. The venom shuts down the nervous system and paralyzes the victim. Its venom can kill 10 people and it repeatedly bites. To add to this, it has an almost 100% kill rate and can kill a person in 20 minutes.
13Rigor Erectus
Men who are hanged get a death erection, known as Rigor Erectus.
14Crocodiles
Crocodiles can gallop like a horse. Fortunately, alligators cannot.
15Richard Chase
Serial Killer Richard Chase took any unlocked door as an invitation to come inside. He only entered homes with an unlocked door, killed and cannibalized his victims. He considered that locked doors meant he was not welcome.
16Rabies
Once you begin to display symptoms of rabies you will go crazy and die. There is no cure. Your brain will slowly melt until you are dead. Therefore the second you get bitten by anything that has the potential to carry rabies you should get yourself to the hospital.
17Locusts
Locusts aren’t a type of animal. They are a condition some grasshoppers experience. Many species of grasshoppers become locusts when they are too crowded (literally their legs rubbing together triggers the change). Once grasshoppers start to swarm they will join up with others, physically grow larger, change color, and eat basically anything they find. Most of a swarm will be born as part of the swarm (increased mating is part of swarm behavior). This is why it often seems like locust swarms come out of nowhere. Add in the amount of calories they need to stay airborne, and in addition to devouring acres upon acres of crops, they also cannibalize each other in the air.
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18Murder
According to the FBI, if you are murdered in the USA there is only about a 40% chance that your murderer will ever be found and punished.
19Blobfish
Blobfish in its natural habitat looks like normal fish. It lives so deep underwater that it doesn't use a normal gas bladder to keep itself balanced. Instead, it has a spongy skin that is slightly less dense than water, which becomes damaged and bloated when fishermen bring it up too quickly. It's not really the ugliest fish. It has just experienced something worse than one of us being thrown into outer space. Between sea level and space, there's one atmospheric pressure of difference. Between sea level and 2000 feet underwater, their upper limit, there are 60 atmospheres of difference.
20Crows and ravens
One reason that crows and ravens are associated with death is because they would often follow armies as they marched to battle. Being both carrion birds and extremely intelligent, they realized that a large group of armed men marching in one direction meant that there would be a tasty meal of corpses to eat soon afterward.
