Tigers, the largest extant cat species, are cared for by the staff at the Columbus Zoo and Aquarium, a non-profit zoo located near Powell, Ohio.

A baby rhino and a rare bird named Marla are professionally treated by the zoo staff in Ohio, and later, a polar bear gives birth.

A lynx is treated by staff at the Columbus Zoo and Aquarium, a non-profit zoo located near the city of Powell, Ohio, in Liberty Township, Delaware County, Ohio.

The members of the staff observe a pregnant pangolin, mammals of the order Pholidota, at the Columbus Zoo and Aquarium, a non-profit zoo near Powell, Ohio.

It's raining baby giraffes and two camel brothers embark on a new life.

A sheep has an abscess; a giraffe gives birth; a very skinny skink is featured.

Some of the deadliest patients at the zoo are featured, including a 200 lb. python with killer back pain, a girl-shy male lion, and a bear with a gnarly cough.

Lioness Maya has a fractured tooth, leading to a potentially life-threatening abscess, and taking a 160-kilo cat to the dentist requires a team effort.

Senior Taronga vet Larry and the team assess the health and genetics of six vital koala populations as part of the Koala Sentinel Project.

Gracie, the abandoned koala, charms as the cutest housemate for Annii.

Brendan and Bailey visit the fish market for ice to keep residents engaged.

To survive in Port Protection, residents must use their creativity to adapt and thrive.

Residents of Port Protection, Alaska, work together to solve various problems while simultaneously valuing their independence and privacy.

With winter in full effect, Mother Nature tests the strength of Port Protection residents.

Persistence and patience are necessary skills for the residents of Port Protection.

Sue Aikens upgrades her fuel system; Glenn Villeneuve works on a survival strategy for when his canoe tips; Andy Bassich hunts black bears for meat and food.

Residents of Port Protection must rely on their hard-earned skills in order to survive the winter.