Endangered Tigers: Resources on How to Help

August 11, 2011— -- From abandoned baby orangutans to endangered tigers in the wild, "Nightline" has brought you the touching stories of many animals and animal charities across the globe.

There has been an outpouring of comments from our viewers looking for ways to help. Below is a list based on recent stories.

The cubs in the "Nightline" story are Bengal tigers. The Sumatran tiger is the only subspecies of the big cat remaining in Indonesia after the country's Javan and Bali subspecies went extinct in the 20th century. It is estimated that only 400 Sumatran tigers now survive in the wild.

It's estimated that only 3,200 tigers are left in the wild. The World Wildlife Fund hosts an ongoing "Save Tigers Now" campaign on its website that is accepting donations. Click here for more information.

Humans aren't natural prey for elephants and tigers, but in the Sundarban islands of West Bengal, India, an alarming number of people have been attacked by these wild beasts. Some experts believe environmental issues and a rapidly growing human population in the region are reducing their habitat and their natural food supply, and forcing them into villages.

Watch the full story on "Nightline."

A baby orangutan in Houston's zoo was rejected by her mother, but 50 surrogate human moms have stepped in to fill the void.

Watch the full story on "Nightline"