Worst creatures on the Earth?

Botflys

nobody said fly? its that insect who pisses you everyday

but my biggest vote will go to humans, i hate them all, unless they make giveaways, i love human beings who make giveaways, and those humans who make free internet coupons, i love them too

Humans.

Gustave.
EDIT:
One more question:
On which Earth, sir?

must be mosquitos

Dogs and hornets.

Humans.

We tried to rule the world.

house fly !!!! they just come in to your house and FLY FL FLY FLY FLYLFLFLYFLYLFLYFLYYYYYYY ............. F*** AM GOING TO KILL THAT FLY NOOOWW

(Phyllodes Imperialis) Halloween caterpillar is not amused.

I've got mixed feelings for mankind:

-)We're killing ourselves and the wildlife, the only reason our technology is like this is because humanity thinks only of war and we've been causing the extinction of a huge number of species

+)We've evolved with the times, when the ice age came, we survived. When the plagues arrived, we survived. Wether it's floods, droughts, famine or sickness, we always, ALWAYS make it out alive. We evolve, we mutate, we change in order to adapt to everything...

Nazis

Troglodytes.

Humans. Name one thing we've actually contributed to the survival of the Earth.

No, don't count "going green". We're simply rectifying our own destruction in that regard.

Something where we aren't fixing our destruction, but where we helped the ecosystem of the Earth in general to maintain survival.

We didn't.

Communists.

Mosquitoe.
Jellyfish.

Spiderpigs... I cant get them off my ceiling.

Super Heroes, because they get in the Villains' way~ :3

Technically, humans would be the worst creature to exist on this planet.

We are ruining this planet, slowly but surely.

We are the dominant force on this planet, and while you are typing this on your computers and laptops, remember that millions of trees died to bring us what we have today, and without those deaths, we would have nothing.
If we would really want to help the planet, the most we could do is die out entirely, or do something so radical to our current lives, that the world as we currently know it would slowly fade away. Sentient races will always destroy nature, for it is needed for the progression of a species. You all complain about Humanity destroying everything they touch, yet you completely disregard the fact that you're typing this on a computer which is connected to a central generator likely powered by a fossil fuel emitting power plant. I acknowledge the face that Humanity is destroying Earth, but we must in order to progress. If you really cared about the environment, you would try to preserve it as much as possible (renewable energy, etc etc...) Until we get to a point where we can build without emitting gases that hurt the environment in a practical manner, or cut down trees, or anything else, it will be as it always has been, and nothing can change that. Have fun poking holes in my logic guys :)

I'm BATMAN!!!!!!!!!!

Humans

The human race requires judgement!

useless thread makers.

Politicians, bankers, religious fanatics, commies and liberals. These creatures are the worst.

OP