QUICK BITES: Former law enforcement officer Petronel Nieuwoudt traded her badge for a poop-smeared uniform and founded the largest orphan rhino sanctuary in the world.

QUICK BITES: Can an ancient breed of dog solve a modern-day problem? If that problem is cheetahs vs. farmers, then yes, they can.

QUICK BITES: Do hummingbirds have anything in common with helicopters? What about snakes? Find out about this tiny bird's incredible adaptations.

QUICK BITES: When a gorilla grunts like a pig, it actually makes the gorilla seem human. Check out the tale of the 500-pound babysitter with a heart of gold.

QUICK BITES: Round-the-clock nursing may be the norm when raising humans, but a human feeding jellybean-sized baby hummingbirds three times an hour takes real dedication.

QUICK BITES: A black Labrador retriever that can't play fetch is not exactly the ideal candidate for a rescue dog. Lucky for Keela, canine recruiter Kirsten Fulk saw her potential and got her a job with Department of Homeland Security.

QUICK BITES: When a silverback Grauer's gorilla suddenly dies, can a plucky young female take over as leader of the troop?

QUICK BITES: So, you're going 'all in' to win some females for your family group? Dr. Tara Stoinski imparts some do's and don'ts for young male gorillas who take on alpha male silverbacks.

QUICK BITE: LIVE SHOW! Dr. Eddy Kambale races against time to save a wild baby mountain gorilla from a deadly snare. But, will her angry 400-pound father let him get close enough to save her?

QUICK BITES: Can conveyor belts save this endangered species? Conservation innovators think so.