Before I begin to answer that question, tell me why do snakes even need to have poison at all? Here is why. Snakes use their poisonous bite to protect themselves from predators. Also, snakes are usually smaller and slower than their prey. Their venom makes it easy for them to catch the prey since after poisoning the prey either becomes slow or dies.

Now coming to the question, How do snakes get poison on their teeth? The answer is that snakes do not have poison on their teeth. They store their venom in small bags (sacs) located on each side of the mouth, in their upper jaw. They have special glands that make venom. When a snake feels threatened, venom travels through tubes from these sacs to the fangs (snake’s teeth). Most snakes spread their venom by biting. However, a few, such as cobras, can spit their venom at a target. Have a look at this:

Snakes are not the only creatures that have venom. Some others are Scorpions, Octopi, Spiders or even some ants.
You will be shocked to know that snake venom is useful too! Snake venom is collected and used to make medicine that can cure snake bites. Amazing huh!!

Did you know?
Out of about 3,000 typess of snakes, only about 350 have venom that is dangerous to humans.