Perhaps some day, researchers will figure out how a species, no matter how small or big or complicated, knows that other entities in its environment are of the same species, therefore, it’s not going to attack and/or destroy its own kind. A virus ‘understands’ when it’s in the presence of another of its kind, and won’t try to destroy that other entity.
Humans recognize their own kind, and very often, go about destroying others like them. We meed to find a way to turn off that self-destroying impulse in ourselves. The devil in us needs to be eradicated.
Chimpanzees will kill other chimpanzees so it may be a primate thing............................