Venom is a toxic substance produced by certain animals, such as snakes, spiders, and some marine creatures. It is used primarily for hunting and self-defense. Venom can be delivered through bites or stings, and it often contains enzymes and proteins that can affect the victim's body in various ways, such as causing paralysis or disrupting blood flow. Different species have evolved unique types of venom, tailored to their specific needs. For example, the venom of the black widow spider can cause severe pain and muscle cramps, while the king cobra has a potent neurotoxin that can lead to respiratory failure. Understanding venom helps in developing antivenoms and medical treatments.