Jumping Spiders, those very alert arachnids, you know, have many eyes. Some of the eyes are at the back of the head. Some even have extra eyes on the abdomen (i.e., their rear section). One of the reasons that they have eyes in such places is so that they can more efficiently see moving prey (that they can capture to eat). Another reason for having eyes in such places is that other Jumping Spiders (or other spider species or insect enemies) may try to sneak up on them (to devour them). Seeing such “attackers” affords quick reaction involving countermeasures.
We might think, “Oh, how very primitive these spiders are, to be attacking and killing each other with such violence.” Our species, it can be seen, however, still often kill each other on the so-called battlefield. “Battlefield,” by the way, is just a word or accepted term for where humans go to react ultra-violently (i.e., primitive-ass crazy). Many of us periodically celebrate those who were the most violent, calling them “great heroes.” We seldom celebrate — we rarely celebrate — those who were opposed to war. (We, instead of observing through separative countries, religions, and tribes, need to observe holistically and globally — which would help to end all wars — but most of us won’t do that, because of being firmly and stagnantly stuck in separative ruts. So the unending nonsense will continue.) To really go beyond being primitive and violent, we must observe without all of the separations that were poured into us.