With only 500 Gaboon vipers left in South Africa, taking a sample now is critical if researchers are ever to find out if its venom could be used to help further development of pain medication.
The African forest cobra contains neurotoxins that could help treat Alzheimer's disease. After catching this forest cobra in a friend's attic, Donald takes it outside to extract its venom.
Bindi handles her first freshie, a rather small and harmless crocodile. Then Bindi steps in to offer comfort to a gigantic crocodile her father and his team have captured.