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Why don't spiders eat insect shells? That's why

Why don't spiders eat the shells of insects? Spiders are a kind of ferocious small animals. They often look for prey through their own spider webs, so why don't spiders eat the shells of small animals?

Spiders are carnivorous animals whose food is mostly insects or other arthropods. But spiders have no jaws, so they can't swallow solid food directly, but slowly.

When insects or other arthropods touch the web, they often struggle hard on the web to make the web silk vibrate, which makes spiders quickly find out that the spiders climb to the prey along the longitudinal silk, wrap the prey with the silk, and fix it on the web; the spiders first inject the venom secreted by the venom glands in the claws into the prey to kill it

Then the digestive enzyme secreted by the midgut is infused into the tissues of the catches torn by the claws. This digestive enzyme can make the insects comatose, convulse and die, liquefy the body, and turn it into a 'can of high protein with a can of liquid'. Then it is sucked into the digestive tract; finally, the leftover shell is usually left on the spider web completely by the spider.

Because the shell can't be softened by the digestive fluid. Maybe you don't know that the spider can't chew. It usually pours the digestive fluid into the food body and sucks his meat sauce.