Useless Disturbing Nature Facts

Well, Goops asked for it and I shall deliver. Here's a list of disturbing facts about the world around you that will probably be of no use in life whatsoever.

• The third right arm of the Great Pacific octopus is actually it's penis.
• The Komodo dragon was once thought to have bacteria in it's saliva that killed it's prey by blood poisoning. In fact, the Komodo dragon uses a kind of venom, making it the largest venomous reptile in the world.
• A species of spider called Evarcha culicivora uses a special perfume to attrack mates. What do they use? Malaria-infected blood.
• In Australia, male Dawson's bees hatch first, emerging from their underground nests and waiting for the females to emerge a month or two later. When the females do hatch and tunnel out, the males begin fighting over the right to mate with them, forming rolling balls of stinging, biting carnage. Sometimes, a female will get caught up in the scrum and be killed.
• Convict fish are wierd. They make burrows to lay their eggs, the babies hatch and stay together in a group as they swim about and feed. But the parents never leave their burrow. So what could they eat whilst they stay down there?
• Humboldt sqiud are ravenous hunters - when one of their own is hooked by fishermen, the others often devour it before it can be pulled up.
• The African brunsvigia grows so fast you can actually see it blooming. This is because they only last a few weeks before being wilted by the sun, so they must get pollinated as quickly as possible. When this happens, the flowers transform into seed-carrying capsules. The wind snaps off the entire top half of the plant, which rolls down slopes dispensing seeds as it goes.
• Japan has a species of beetle that collects drupes (a kind of fruit) to feed their young with. Females may try to steal drupes from others, and the babies will often move to a better burrow if their own mother cannot feed them well enough. Also, the babies last meal before they leave their home... is their own mother.
• The pistol shrimp's "gun" claw works by firing a high-pressure cavitation bubble, which is strong enough to kill small fish. As the bubble collapses, it momentarily reaches 4,700°C in temperature - 800°C short of the shun's temparature, 5'500°C.
• Some species of stomapod (or mantis shrimp) use their hammer like-claws in a similar way. Their muscular forearms, when swung, can reach 50mph (23 m/s) from a standing start, and the force of the blow creates a cavitation bubble that generates force between the victim and the club. In effect, the prey is struck twice, and this is usually enough to shatter the shells of sea snails, crabs and oysters. Those stomapods that possess the club-like arms have been known to smash aquarium glass.
• The thirst snake is a South American snake that eats nothing but snails. They get the snails out of their shells by using the shorter, upper jaw as a brace against the shell, then forcing the longer lower jaw into the shell past the hood, pulling out the snail's body and swallowing it. Because their diet is so soft, thirst snakes don't have the expandable chin flaps on other species, and cannot eat anything larger.
• Crocodiles and alligators cannot stick their tongues out.
• A duck's quack does not echo, and no-one knows why.

I'll post more, if people demand it. Hmm, what other ways does Mother Nature like to freak us out?