Cool photos of animals close up to the camera taken by photographer Stefano Unterthiner.

With a PhD in Zoology, Stefano Unterthiner isn't just any ordinary animal photographer. In fact, his passion for telling an animal's story takes him around the globe. As a skilled photojournalist, he waits for precise moments, often times spending long periods in the field in complete solitude. You've probably seen Stefano's photos but never have known it, he's a regular contributor to National Geographic. Check out some of this finest photographs: