How do poisonous animals not harm themselves?

Have you ever wondered that poisonous animals store their venom inside their body but don't get poisoned themselves?

Scientists tell that these animals have come up with two strategies: Securely storing their toxin or evolving resistance to their venom. Sometimes both of these strategies are used by the organism.

Let's take a case of a snake that uses the combination of both strategies to understand them better. There is a built-in poison gland above their fangs, and when the fangs are pressed into the prey's body the venom comes out with it. Snakes are also resistant to their poison some say it's because snakes make an antidote, and some say snakes have evolved being resistant to it.

Other organisms use these strategies too. A few examples can be the Bombardier beetles, Poison dart Frogs, and Grasshopper mice. Poison Dart Frogs only use the second strategy but, they haven't evolved that way it's their food choices that make them resistant to their poison.

So the next time someone asks you don't snakes get poisoned with their poison, you will have an answer for them.