Cross-breeding of dogs over thousands of years has made it extremely difficult to trace the ancient genetic roots of today's pets, according to a new study led by Durham University.

Biology - Plants & Animals

May 21, 2012 4.7 / 5 (7) 1 |

Puppies born from the world's first cloned dog will be offered to good homes later this year, South Korean researchers said on Thursday.

Biology - Biotechnology

Sep 03, 2009 5 / 5 (1) 3