Spiders don’t just suck the blood of their prey, but the guts too.
Most spiders bite their prey, then inject a venom that contains paralyzing toxins.
Then they pump digestive juices into the victim and either suck out all the victim’s juices (blood and organs both) right away, or wrap up the live-but-paralyzed casualty to eat at a later time.
Although spiders are generally regarded as predatory, juveniles of some species of spiders feed on plant nectar.
