7 t, J' A0 T/ a' ]/ b Dogs have long been dependable companions by our sides. But it wasn’t always that way, and a look at their closest living relative, the wolf, makes it clear why. Research into dog domestication and intelligence offers clues into the human-dog relationship. And analyzing dogs’ brain activity and genes may even help answer whether dogs are in it for the food—or if they really love us. + ]; v" W7 ~! s0 h7 m6 T ) b6 i" j5 w. J- M* J7 M + S; J. ]( S) t/ [; Y0 t9 G6 v8 T5 e" G/ J5 A
