unlike purebred Holstein dairy calves," Cantor said. "We think this is at least partially attributed to hybrid vigor—the phenomenon by which a progeny exhibits superiority over its parents in ...

DAVIS, Calif. — Sushi, a four-week-old Holstein calf, was lying in a pen under the hum of a metal fan when a group of professors and graduate students arrived to sample his stomach. The male ...

ZURICH (AP) — A 19-year-old Asian elephant at the Zurich Zoo gave birth this weekend to a male calf whose name, starting with the letter Z, will be announced this week. A light-sensitive monitoring ...