ZHANGZHOU, China, April 18 (UPI) --An unlucky-in-love bull on a Chinese farm was caught on video attempting to mate with a larger cow and falling onto his back. The video, filmed earlier this year, ...

Unlike most dairy cows in America, which are descended from just two bulls, this cow at Pennsylvania State University has a different ancestor: She is the daughter of a bull that lived decades ago, ...

Significant emphasis has been placed on the importance of fertility in the female, whether in the cow or a developing heifer. When we address fertility in one female, we are affecting one offspring.

Chad Dechow, a geneticist at Penn State University who studies dairy cows, is explaining how all of America's cows ended up so similar to each other. He brings up a website on his computer. "This is ...