A spider named “Pisaura Amazing” must give a gift to a spider in order to reproduce. And such a subtlety - a gift, for example, a fat fly, should be carefully packed. This spider carefully and beautifully packs the fly into the web. In order for the spider to unfold for a long time, and he will multiply at this time. So, some spiders eat the fly, eat everything delicious, and the skin is beautifully wrapped. What an abomination. And some do even worse - they bite a fly, go to the toilet, and this is the most beautifully wrapped. And will give. And then they run away quickly until the angry spider kills them. And some spiders catch the gift and run away. They cheat like that. But a cautious spider does not release a gift from his legs and drags for it. It’s heavy, so I have to stop. The spider gets what he wants. Zoopsychology is very instructive.