The spider's "gossip" net is a complex and beautiful octagonal geometric pattern, and it is difficult for people to draw a symmetrical pattern like a spider's net even with rulers and compasses.
In winter, cats always hold their bodies in a ball shape when sleeping, because the ball shape minimizes the surface area of the body, so it emits the least heat.
White birch leaf weevil is going to "produce" They will make conical delivery rooms. The female elephant worm climbed to a place not far from the petiole, bit through the leaf with its sharp jaw, and then went back to bite out the first arc crack. Then climb to the other side of the leaf and bite out a curve with less curvature. Finally, go back to the beginning and roll the lower part of the leaf into a thin cone shape for 5-7 times; Roll the other half of the leaf into a conical cylinder in the opposite direction. As a result, the sturdy delivery room was built, and the Betula platyphylla weevil got in and laid eggs safely.
We humans can't see clearly at night, but Nocturnal Animals, such as cats, dogs, tigers and lions, can still go out to hunt. What is the reason? It turns out that the retina behind their eyeballs is composed of cylindrical and conical cells. Cylindrical cells are suitable for sensing objects in weak light, while conical cells are suitable for sensing objects in strong light. The cylindrical cells in Nocturnal Animals's retina are dominant. Although the light is extremely weak at night, they can still see clearly.
Eagles dive from the air and always choose the best angle to attack their prey. When gecko preys on mosquitoes and other small insects, it always crawls along the spiral curve of magnetic card. Mole, super myopia, can always turn 90 when digging a tunnel.
You see, the "graphic" geniuses in animals are all good at craftsmanship, which is simply wonderful. In some ways, our architects may sigh.
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