How much can it eat? They eat beetles, frogs, bats and TONS more. Sometimes they eat a bird! Other spiders don't even get close to that. They have venom that paralyzes the prey. They have digestive juices they spit at their prey. The juices dissolve the animal so it can eat it. They have straw-like mouths so they can't eat solid foods. They use something called stridulation. It is used when threatened. They rub the bristles on their legs and makes a hissing sound. Now it is reversed, some people eat spiders! Instead of them eating, they get eaten.They are actually healthy for you. They are full of protein. That's it for all the facts.