Snakes evolved venom fangs multiple times from wrinkles in their teeth

Many snake species have been able to evolve venom fangs, because they all inherited the same wrinkle-like structures inside their teeth that became channels to carry venom towards the tip

Snakes evolved venom fangs multiple times from wrinkles in their teeth
Many snake species have been able to evolve venom fangs, because they all inherited the same wrinkle-like structures inside their teeth that became channels to carry venom towards the tip