A body can't be good or evil. Without a soul or consciousness, it is nothing—just dirt and water (carbon). I understand that animals, although they have some intellect, unlike humans, still differ between "good" and "bad," for example, not eating their own young (though some, like lions, still do). But I don't consider these "beasts" evil. My understanding is that it is the role or "Dharma" of any animal to perform its duties as nature or God has wired it to do—its "Karma." Just as a snake has the duty to bite and poison, jackals and wolves have the duty to hunt lone prey (such as a man lost in the woods).
In this way, nature "protects" the habitat of many animals. The food chain, although cruel, maintains the balance of life on Earth, prevents overcrowding (if such a thing exists), and ultimately protects itself. But in this "harmony" of life, did nature introduce "Evil"? All the brutality and violence—though basic, innate, and reflexive—of these beastly life forms is not "deliberate," not consciously abhorrent or evil. It still has meaning; it serves a purpose. Beauty, love, pleasure, happiness, and peace also exist amid all this chaos.
But man, on the other hand, despite being given the "unlimited" intelligence of any life form, "chooses" to be nothing but evil. To rape, loot and plunder, murder, arson, fighting, repression, suppression, oppression, abuse, psychological and physical torture—the agony, the pain, the suffering—all caused by man and his actions toward his fellow mankind and nature "herself"—deforestation, climate change, fracking, and more. All the rise and fall of empires, all the wars and genocides—driven by power, hunger, greed, lust, envy, and pride!
I wonder if evil can ever be removed from Earth, as it doesn't exist on Earth—not in a physical or material sense. It is not something that can be fought and destroyed from the outside. It is within. It is in the thoughts and ideas, in the hearts and minds of men. We can kill all the snakes, lions, wolves, and mosquitoes and rid the Earth of all "beasts," but what happens to the "beast" within? Who is going to purge that?