The largest-ever study of dog behavior, tracking more than 47,000 pets, reveals how breed, size, sex, and age shape canine traits. It provides insights that could help identify early signs of illness ...

Looking for dingoes in the Blue Mountains west of Sydney, Australia. Source: Brad Purcell, used with permission As I was writing a post called "What Do All These Dog Studies Really Mean?" that's ...

Statistics suggest that the size of families in many countries is shrinking and a growing number of parents worldwide either willingly or unwillingly end up only having one child. While many ...

But the researchers cautioned that the work could not shed much light on sexual orientation in humans. By Carl Zimmer In more than 1,500 animal species, from crickets and sea urchins to bottlenose ...