Botflies: These bugs kind of resemble a little bumblebee, but they are far more horrifying. Their larvae are parasitic, injected into unsuspecting hosts by infected misquitos. They burrow under an animals skin or yours until they painfully crawl out.

Japanese Giant Hornets: These suckers can grow to be 2 inches long and their stingers can be a quarter-inch long. Not only are they GIANT, but they are extremely aggressive and fearless.

Africanized Honey Bee: These are killer bees. Their ancestors were European honey bees crossed with African honey bees. Theyre aggressive and extremely protective of their hives. Being swarmed by these bees can kill you, or result in so many stings your organs shut down.

Bullet Ants: Found in rainforests throughout Central America, their bite is so painful, youll feel like youve been shot. Plus, the pain lasts for 24 hours. An indigenous Brazilian tribe use gloves filled with these ants as a painful initiation ceremony.

Assassin Bugs: There are different species of these bugs they attack their prey quickly and violently. They kill other insects by stabbing them with their sharp beaks and then inject enzymes into the prey. The enzymes soften the insides, allowing them to slurp it out.

Jewel Wasps: This parasitoid wasp use cockroaches as a live food supply for its developing larvae. It attacks the cockroach, paralyzing it. Then, it injects venom into the roachs head, preventing it from trying to walk. The wasp then turns it into a zombie nursery, by laying its eggs into its abdomen. Yikes

Cicadas: These tree crickets live underground and then, as they mature, make their way to the surface. They can produce sounds up to 120 decibels louder than a concert. They hang out in, and die in, extremely large numbersswarms

Stink Bugs: They may not bother humans they prefer vegetation, but they will make you smell if you bother them too much. Even if you smash one, youll be plagued by his or her stink

Saddleback Caterpillars: Although they are cute they have their own little saddles!, these bright bugs are venomous. Contact with their hairs causes a painful, swollen rash and sometimes nausea. The sting can feel like an electric shock.

Cockroaches: These guys are extremely common and can carry 33 types of bacteria, 6 kinds of parasites and 7 pathogens. They can go 45 minutes without breathing, live a month without food and they will eat hair, toenails, eyelashes and eyebrows.

Japanese Mountain Leeches: Youd think most leeches live in water, but this one can hunt you on land. They are typically slow, but can somersault after any prey pretty quickly, or drop down from trees. They can chew through your clothing and the numbing agent they can inject you with will ensure you dont feel them sucking on your blood.

House Centipedes: Thats right, as in, YOUR HOUSE. They are harmless, but you can find them underneath cabinets, in closets and basically everywhere you wouldnt want to find a disgusting centipede.

Giant Centipedes: These awful creatures can grow to be up to 15 inches long. Even better? Its also poisonous. It cant kill you, but you will need to go to the doctor. The solution is to just avoid these nightmares entirely.

Huntsman Spiders: These spiders are big. And, depending on where you live in the world, you can find them in your own home. It doesnt use a web to catch its prey, itll actually use its unreasonably huge legs to chase down its food. Thankfully, its not poisonous.

Joro Spiders: Unfortunately, this scary spider is poisonous. Its bite is similar to that of a black widow spider. They are so awful, they have existed in Japanese folklore as evil seducing demons.

Giant Wetas: Found in New Zealand, this oversized bug is one of the largest and heaviest in the world. They typically dont bother humans, aside from haunting our dreams.

Giant Orb-Weaving Spiders: This family of spiders is particularly terrifying. Many are poisonous and some are SO BIG, they can hunt and kill a snake for a snack.

Or a bird. There is no reason why you should go near one if you see it in the wild. You should, in fact, run.

Giant Katydids: Although these bugs can make you cringe in every way possible, the hamster-sized katydids arent harmful to humans. You can even keep them as pets if youre brave like that. Theyre more active at night and create songs, like crickets do.

Dobsonflies: Both males and females can grow to be up to 5 inches long. The males mandibles are actually so big, they are unable to harm humans. The females, however, can bite you and even draw blood. Adults can generally be found from late spring into the middle of summer, remaining near bodies of water. Where you will be on vacation

Titan Beetles: These giant bugs can be around 7 inches long and their pincers can snap a pencil in half but they usually leave humans alone. If you bother it, though, it will attack you. The worlds largest beetle WILL attack you

Giant Isopods: This isnt from a science fiction movie. These giant isopods, although technically a crustacean, are still terrifying. They live in the oceans but that doesnt mean youre safe.

Brahmin Caterpillar: You dont think living nightmares exist? Well, youre WRONG. These caterpillars look like a creation of Tim Burton, like tiny terrors, but they cant harm you.

Youd think that their appearance is for camouflaging purposes, but they may just want to make sure you never sleep soundly again.

Puss Caterpillars: It may look cute, but this fuzzball is actually quite venemous. They are high in protein and slow moving, so they needed a defense mechanism: serious toxins. Do. Not. Pet. Them

If you do touch one: You will experience intense throbbing pain develops within five minutes of contact, with pain extending up the affected arm. Other symptoms may include headaches, nausea, vomiting, intense abdominal distress, lymphadenopathy, lymphadenitis, and sometimes shock or respiratory stress.

Giant Silkworm Moth Caterpillars: This terrifying caterpillar is actually responsible for several deaths a year. The tiny, fragile hairs it is covered with are full of potent toxins. Grangrene-like symptoms and internal hemorrhaging can occur as a result of this sting.