Why do some animals have venomous bites?

Some animals have venomous bites as a means of defense or to help subdue prey. Venom allows these animals to immobilize or kill their prey quickly and safely, making hunting more efficient. For example, snakes use venom to paralyze their prey, making it easier to consume. Venom can also act as a deterrent for predators, as it makes the animal dangerous or unpalatable. Many venomous animals, such as spiders, scorpions, and certain fish, have evolved specialized fangs or stingers to inject their venom.