Animals, Plants, and Other Organisms that Should Have Never Existed

This is the list of organisms that should have NEVER evolved or continue to exist till modern times. Feel free to submit the unwanted organisms.

The Top Ten

1 Ebola
2 Batrachochytrium Dendrobatidis
3 Dendrocnide Moroides
4 Parasitic Worm
5 Giant Hogweeds
6 Bot Fly
7 Wild Parsnip
8 Horse Fly
9 Fleas
10 Poison Ivy

The Contenders

11 Tick
12 Bed Bug

Lol. I had no idea those were real.

13 Deer Fly
14 House Cat

House cat because they're one of the worst invasive species. House/domestic cats are responsible for killing off many small animals of endemic islands (Australia, Hawaii, New Zealand, etc) to extinction. Don't let that cuteness cool you, cats have mostly negative impact towards almost all small animals of all islands due to predation on species that naturally never experienced many predators. The world would be better off without domestic cats. - DinoLover4242

But I love cats! - Firemist

... Really? - PokeFallsMagica

15 Non-Parasitic Wasps
16 Mosquito Spanish for "small fly," mosquitoes are flies that have been known to cause various diseases . A sample of diseases caused by mosquitoes: malaria, yellow fever, Chikungunya, West Nile virus, dengue fever, filariasis, Zika virus .

They need to be killed off - ElSherlock

17 Pseudogymnoascus Destructans

It causes white-nosed syndrome that is killing off many endangered bat species of North America, and therefore, this should have NEVER existed. - DinoLover4242

18 Hornet Hornets are the largest of the eusocial wasps, and are similar in appearance to their close relatives yellowjackets. Some species can reach up to 5.5 cm in length.
19 Humans Humans are not exactly wild animals, but they are not domesticated either. Humans are proven to be the most intelligent species of animals on Earth. Humans' colours vary from almost pepper black to milky white.

Why is the human on this list? This list was meant for non-human organisms. - DinoLover4242

Some of these other species are invasive, but we can decimate.

So do you hate yourself.

20 Black Widow Spider

You are now entering the spider section of this list - Pieclone

21 Kudzu
22 Brown Recluse Spider
23 Australian Funnel-Web Spider
24 Brazilian Wandering Spider
25 Red Widow Spider
26 Redback Spider
27 Hobo Spider
28 Yellow Sac Spider
29 Mouse Spider
30 Cane Toad
31 Box Jellyfish Box jellyfish are cnidarian invertebrates distinguished by their cube-shaped medusae. Some species of box jellyfish produce extremely potent venom: Chironex fleckeri, Carukia barnesi and Malo kingi.
32 Assassin Bug
33 Brown Tree Snake
34 Deathstalker Scorpion
35 Cottonmouth
36 Body Louse
37 Desert Locust
38 Water Hyacinth
39 Crane Fly

An insect commonly referred as a daddy longlegs, it has abysmal intelligence and it doesn't make for a good food source as it only appears for a brief period of time in Autumn. - FuN506

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