In comparison, this phytoestrogen-filled plant diet doesn't seem to affect reproduction in the one-horned rhinoceros bred in captivity, which doesn't seem to be as sensitive to these plant compounds.

Zoos may be welcoming fewer baby rhinos into the world in the future: Their reproductive rates are dropping drastically because of medical problems. New research suggests their zoo diet could be ...

COLUMBUS, Ohio -- A new study shows that captive black rhinos -- but not their wild counterparts -- are at high risk for two common health problems suffered by millions of humans: inflammation and ...

Global Field Program (GFP) graduate student and zookeeper Stephanie Hurst of Buffalo, New York, was published in Animal Keepers' Forum, a publication of the American Association of Zoo Keepers (AAZK).

The days of letting visitors throw marshmallows to the animals are mostly history at zoos around the country, replaced by a growing focus on diet and nutrition that parallels the fitness craze in ...

Eds: ADDs photo, minor edits throughout. Multimedia: An audio slideshow on nutrition at the Brookfield Zoo near Chicago is available in the —health/zoo—nutrition folder. CHICAGO (AP) — Gorillas on ...