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

Ebola
Batrachochytrium Dendrobatidis
Dendrocnide Moroides
Parasitic Worm
Giant Hogweeds
Bot Fly
Wild Parsnip
Horse Fly
Fleas
Poison Ivy

The Contenders

Tick
Bed Bug

Lol. I had no idea those were real.

Deer Fly
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.

But I love cats!

But lots of careless pet owners released cats, causing cats to kill off many small animals in islands and Australia to extinction. Believe it or not, the people of Australia (especially conservationists) are suggesting outlawing cats from Australia to save the native animals.

... Really?

Non-Parasitic Wasps
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

Actually, not all of them since some play the important role of pollinating plants and is a primary food source of some species of bat or birds. I would just eradicate all diseases and viruses the mosquitoes may carry, to make sure that the ecosystem doesn't collapse. - DinoLover4242

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.

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.
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.

Black Widow Spider

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

Kudzu
Coronavirus
Brown Recluse Spider
Australian Funnel-Web Spider
Brazilian Wandering Spider
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