Feral breed lacks domestic dogs' skill.
Domestic dogs consistently outperform wolves on tests in which they must rely on a trainer's motions to lead them to hidden food (SN: 11/23/02, p. 324). That indicates that reading gestures evolved in dogs after they were domesticated from wolves more than 10,000 years ago, said Hare, who conducted both these tests and his latest research at Harvard University.
Following the earlier finding, Hare subjected New Guinea singing dogs to the same test and found that they performed about as poorly as wolves did. The singing dogs descended from tame dogs that followed Stone Age people to New Guinea. Being feral for millennia, however, they haven't experienced the full dose of domestication that shaped cognition in other dog breeds, Hare said. --B.H.
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|Article Type:||Brief Article|
|Date:||Feb 28, 2004|
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