Could high-tech toys help captive animals act more wild?

Animals that bridge the human world and the wild can be uniquely perilous to human health.

Recent images of the moment of release—when many different kinds of animals were reintroduced to their natural habitats after rehabilitation, or as part of repopulation efforts, or simply to help grow an ecosystem

Images of animals around the globe, both affected by, and coping with, a suddenly changed world