The Machinations Of Piercing Flesh..

Above: the tip of a hypodermic syringe needle.
Below: the tip of a fang from the cobra Naja kaouthia.
Both are designed to pierce the skin and admit fluids into the bloodstream, although it is often the case that the intended effects are polar opposites.

Artificial designs frequently imitate those of nature; in this case, mankind was approximately 25 million years late. 


Source: Corporus Fabrica