A single snake wrapped around a staff became a medical symbol from the fifth Century BCE.
Snake venom was often used in conjunction with other chemicals for medicines.
Unicorns were first mentioned by the ancient Greeks as a symbol of purity and grace.
Their spiraling horn was believed to have had the power to heal, especially against poisons.
Crocodiles or alligators were associated with apothecary and chemist shops. It was a way of
showing that chemist had access to the rarest & most exotic ingredients.