They may have been drawn to the discarded remains from ancient human meals, and a new model shows tame wolves could have become dogs in as little as 8,000 years.

A massive study of fraternal and identical twins has surprisingly concluded that much of our emotional response toward dogs is genetic.

How did your friendly Fido become so different from his closest living relative, the wolf? See what scientists believe about humans' artificial selection pressures on the dog genome. Aa Aa Aa Any ...

Researchers have discovered genes linked to obesity in both Labradors and humans. They say the effects can be over-ridden with a strict diet and exercise regime.