In the largest study of its kind, scientists have accurately documented the massive change in animal morphology over the last 1,000 years, with domesticated animals growing larger across the board and ...

Add Yahoo as a preferred source to see more of our stories on Google. Meerkats, as well as humans, are part of what researchers called a "premier league" of monogamy. - Martin Schutt/dpa/AFP/Getty ...

Since the Middle Ages, the size of wild and domestic animals has largely been shaped by human selection: domestic animals are increasingly larger; wild animals increasingly smaller. During the 7,000 ...

Q. My brother (a basketball player) says giraffes are the biggest land animals because they are the tallest. How do scientists determine what the biggest animals are? A. Scientists, as well as people ...

Humans are far more monogamous than our primate cousins, but less so than beavers, a new study suggests. Researchers from the University of Cambridge in England analyzed the proportion of full ...