Two young black-footed cats at the San Diego Zoo Safari Park cautiously ventured out of their den to take food from one of their wildlife care specialists for their daily feeding. 

In breeding programs aimed at conserving animals from small or isolated populations, scientists must balance the competing needs of adding genetic diversity and avoiding the introduction of harmful genes. 

Rattlesnakes are important to habitat health, but there’s still much to learn about their behavior and ecological role.

Scientists at San Diego Zoo Global’s Frozen Zoo® have achieved a major milestone in saving wildlife species: This unique collection of genetic material now contains 10,000 individual cell lines from more than 1,100 species and subspecies—some of them critically endangered.