Oliver: Our beautiful Olive Python. We adopted Oliver at the beginning of 2017, and he has slithered nicely into the Critters Up Close family. It is incredibly important to maintain a high level of biodiversity and believe it or not snakes hold an integral part of that biodiversity. Without them, prey species will increase to unnatural levels. Although snakes are one of the most feared critters, they are one that deserve respect, understanding and tolerance.