So far they have not built laboratories and spaceships, but they do look for solutions resulting in humans not being the only ones. I'll tell you what I think. I think that one day animals, if they felt the need to, will proved that what you believe to be true as was said in the bible is wrong. Oh wait. They already did.
So you think that monkeys are born then know exactly to grab millipedes and rub it on themselves to keep the insects away. Of all the species of bugs that there are, they went directly for the millipede. So is that where the phrase "monkey see, monkey do," came from? Humans saw monkeys using insect repellent, so they created some for human use?
It's more reasonable to that monkeys observed millipedes repelling insects or more likely, discovered that while handling millipedes. Perhaps while enjoying a snack and noticed that insects around them suddenly started flying away.