Weird Nature
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The Grossest Bugs on Earth

Updated June 18, 2020 20.3k votes 4.1k voters 182.4k views14 items

List RulesOnly arthropods that are actually shuddery-gross... not necessarily scary or dangerous.

I love insects. I do. I fear spiders, but I respect them and try not to let my fear control me when I see one. However, there are bugs that are simply gross. Just really, really gross. Not just ugly (though, definitely ugly), but also nasty in their habits and their behavior. These are the grossest bugs in the world. I know I've left some off the list, so go ahead and add any I've missed. Vote up the nastiest of the nasty.

These aren't the deadliest bugs in the world, nor the scariest bugs you'll ever come across - though some might give you a fright. These little dudes are just super gross - the grossest, nastiest bugs ever.

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  • 1

    Bed Bug

    More blood suckers. And these are in your bed while you sleep.

    Most species feed on humans only when other prey are unavailable. Their bites are not usually noticed at the time. The neck and jaw line are particularly favored places to feed.

    It usually spends less than 20 minutes in physical contact with its host, and once its full, it will not attempt to feed again until it has either completed a molt or, if an adult, has thoroughly digested the meal.

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  • Video: YouTube

    Hey! Everyone loves cockroaches! What are they doing on this list? All filthy and skittering and impossible to smash. Hiding in dark corners and swarming on all their gross hairy legs. In our KITCHEN! Where the food is!

    Yes. This is the king of gross, this thing. I love bugs, and I can't STAND these things.
     
    They are FAST.  I mean, they should be impressive if they weren't so nasty. They've been clocked at 3.4 mph, about 50 body lengths per second, which would be is like a human running 210 mph. They are adaptative and ridiculously bulletproof. The myth about them surviving radiation is no myth.  
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  • 3

    Cattle Tick

    Photo: Alan R Walker / Wikimedia Commons / CC-BY-SA 3.0

    Oh jeez. This list is seriously making me gag. Ticks are bad enough, their whole nasty family of bloodsucking disease-carriers... but Cattle Ticks? If any of you have ever spent any time around livestock, you know what I mean. Horses, sheep and cattle... you'll be walking by or maybe grooming a horse and GAAAAHHHH! It's the size of a grape. A GRAPE! and it's all white and giant, and filled with blood. 

    And you have to get some horseshoe tongs or something and pull it off and... ok, I'm totally traumatized now. This is why I am not living on a ranch right now, people. 

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  • Photo: Filip.vidinovski / Wikimedia Commons / CC-BY-SA 4.0

    Shudder. It's like a cross between two of the most creepy things - spiders and centipedes.

    House centipedes actually feed on spiders, bed bugs, termites, cockroaches, silverfish, ants, and other things we hate in our house. Too bad they are almost worse. It turns out that the thing that's the most creepy about them, their gazillion long legs, is how they administer their venom! GAH! So strictly speaking they sting rather than bite and they tend to do it at night. When the centipede is in danger of becoming prey itself, it can detach any legs that have become trapped. 

     
     
    Of course it can.
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