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 Ebola
2 Batrachochytrium Dendrobatidis Batrachochytrium Dendrobatidis
3 Parasitic Worm Parasitic Worm
4 Bot Fly Bot Fly
5 Horse Fly Horse Fly
6 Deer Fly Deer Fly
7 Fleas Fleas
8 Non-Parasitic Wasps Non-Parasitic Wasps
9 Mosquito 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 .
10 House Cat 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

The Contenders

11 Hornet 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.
12 Bed Bug Bed Bug

Lol. I had no idea those were real.

13 Humans 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.

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

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

14 Kudzu Kudzu
15 Pseudogymnoascus Destructans Pseudogymnoascus Destructans

I added this to the list because it causes white-nosed syndrome that is killing off many endangered bat species of North America, and therefore, this should have NEVER existed. - DinoLover4242

16 Black Widow Spider Black Widow Spider
17 Brown Recluse Spider Brown Recluse Spider
18 Australian Funnel-Web Spider Australian Funnel-Web Spider
19 Brazilian Wandering Spider Brazilian Wandering Spider
20 Red Widow Spider Red Widow Spider
21 Redback Spider Redback Spider
22 Hobo Spider Hobo Spider
23 Yellow Sac Spider Yellow Sac Spider
24 Mouse Spider Mouse Spider
25 Cane Toad Cane Toad
26 Box Jellyfish 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.
27 Tick Tick
28 Assassin Bug Assassin Bug
29 Brown Tree Snake Brown Tree Snake
30 Deathstalker Scorpion Deathstalker Scorpion
31 Cottonmouth Cottonmouth
32 Body Louse Body Louse
33 Desert Locust Desert Locust
34 Water Hyacinth Water Hyacinth
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