On this fascinating island on the Great Salt Lake, see how fast and gracefully these rams can move on steep, rocky slopes.

Due to introduced predators, disease, and habitat destruction, they are almost out of time. See what other challenges the team faces.

On this fascinating island on the Great Salt Lake, see how fast and gracefully these rams can move on steep, rocky slopes.

Due to introduced predators, disease, and habitat destruction, they are almost out of time. See what other challenges the team faces.

Due to introduced predators, disease, and habitat destruction, they are almost out of time. See what other challenges the team faces.

On this fascinating island on the Great Salt Lake, see how fast and gracefully these rams can move on steep, rocky slopes.

Deep into the Alaka'i plateau on the island of Kauai, two species of birds are rapidly nearing extinction, with only a few nests remaining in the wild.

Visit Antelope Island in the Great Salt Lake and learn all about California Bighorn sheep.

Due to introduced predators, disease, and habitat destruction, they are almost out of time. See what other challenges the team faces.

Where these little guys from Madagascar get their name.

The San Diego Zoo has the largest colony of koalas outside of Australia, but the koalas aren't here just to be admired by visitors.

At first glance, this strange place may appear to be dry, harsh, and desolate. But on closer inspection, it’s quite the opposite.

Did you know the Rodrigues fruit bat (a.k.a. "flying fox") has a wingspan of three feet?

At first glance, this strange place may appear to be dry, harsh, and desolate. But on closer inspection, it’s quite the opposite.

You have 20 seconds and only a few hints. Test your animal IQ.

Meet the Rodrigues fruit bat (a.k.a. "flying fox") from a small island east of Madagascar.

It's a cause for celebration at the San Diego Zoo's Institute for Conservation Research.

Where these little guys from Madagascar get their name.

Learn all about these tiny tortoises from Madagascar.

Visit Antelope Island in the Great Salt Lake and learn all about California Bighorn sheep.

They found something pretty remarkable about their growth rate.

Due to introduced predators, disease, and habitat destruction, they are almost out of time. See what other challenges the team faces.

Where these little guys from Madagascar get their name.

The San Diego Zoo has the largest colony of koalas outside of Australia, but the koalas aren't here just to be admired by visitors.