The zoo's largest new arrival, Wallace, a hippo, is on its way from Jakarta, Indonesia.

An inbred white tiger must be neutered; Carrie makes accommodations for a potbellied pig; Bud searches for a short in the 10-mile-long electric fence.

The DeYoung Family Zoo prepares to welcome a baby hippopotamus; Carrie Cramer and her team perform a rescue at the home of a cat hoarder.

Life at DeYoung Family Zoo in Michigan's Upper Peninsula includes the rescue and rehabilitation of exotic animals and local wildlife.

The stories of the exotic animals and the people who care for them at the Dublin Zoo.

"Move as millions. Survive as one." That's the catchphrase of this seven-part event for which a National Geographic team spent two-plus years recording across 20 countries and all seven continents. Narrated by Alec Baldwin, it tells the stories of many of the planet's species and the journeys they undertake to ensure their survival. The diverse range of animals shown -- many revealing behaviors never caught on film before -- include Botswana zebras, Mali elephants, flying foxes in Australia, Pacific white sharks, and the white-eared kob of the Sudan, thought to have been destroyed during decades of violence.

This Emmy-nominated series is designed to mess with the ultimate supercomputer. Host Jason Silva reveals how brains process information related to topics like stress, addiction, competition, food, trust and language. Interactive games and hidden-camera experiments capture hilarious and shocking results, and viewers get real-world takeaways -- how to improve memory, get a better night's sleep, make more money -- to use in everyday situations.

This documentary series focuses on extreme construction projects -- be they the biggest, tallest, longest or deepest in the world -- and the machines used to create extraordinary structures. Episodes include the people responsible for the cutting-edge design and engineering of each build, talking about how concept transformed to reality. The processes that go into staffing and operating the modern marvels once they are completed are also covered.