Familiar human voices draw longer, more intense responses than unfamiliar ones, researchers show
                                
                                
                                    (Newser) -
                                    Domestic cats  can tell their owner's voice apart  from other humans, and apparently their larger cousins have that same capability, according to new research out of Michigan's Oakland University. In the study published Thursday in the  PeerJ—Life and Environment  journal, scientists wanted to see if tigers, cheetahs,...