Answer:
Humans are most likely the most dangerous animal/species. We contaminate and we destroy. 97% of human history has been destroying forests, animal homes, hunting them for their hide, torturing and killing each other, polluting the oceans, polluting space with rocket removals, destroying life itself. Humans are 100% the most dangerous species ever. We have created death itself, and concepts of "righteous" acts, such as execution and neutralization.