Are you mad? I say this to grab your attention more firmly!
Do you think unchecked locusts, would not eat the planet bare? Goats, with no predator, would do the same, destroying all vegetation.
Cats torture their prey for fun. Hippos attack with little provication. Even male beavers, during mating season, are deadly and attack without cause.
Everything on this planet expands endlessly, without predation. Apex predators only die off due to starvarion, see prey/predator population cycles for more info.
Humans are perhaps the most benevolent species, for we actually try to reduce our impact!
Heck, even vegetation cares not for anything but itself. Vegetation changed the entire atmosphere of the planet!
By violence, I don't just mean physical violence. Humanity's emotional violence is astounding. Also, a lot of those animals you mentioned do those things for survival. Humanity is discontented and will often reach for violence that is otherwise not necessary. Animals in the wild will often avoid conflict at all costs.
How do you square "humans try to reduce their impact" with the fact that, exactly like vegetation, we're changing the entire atmosphere of the planet? And getting plastic everywhere from Everest to Mariana Trench, to boot?
