Dogs and humans evolved together, study suggests

By Tia Ghose LiveScience Dogs are more than man's best friend: They may be partners in humans' evolutionary journey, according to a new study.The study shows that dogs split from gray wolves about 32,000 years ago, and that since then, domestic dogs' brains and digestive organs have evolved in ways very similar to the brains and organs of humans.The findings suggest a more ancient origin for dog d...