- How venomous snakes got their fangs. Venomous snakes inject a cocktail of toxins using venom fangs specialised teeth with grooves or canals running through them to guide the venom into a bite wound. Uniquely among animals, grooved and tubular teeth have evolved many times in snakes. https://theconversation.com/how-venomous-snakes-got-their-fangs-165881 9 comments science