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humans.
"We were able to identify one of the many molecular features that likely shape
behavior," she adds.
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Though the origins of the dog/human partnership remain unknown, it's
becoming increasingly clear that each species has changed (during our long years
header The physical differences between a basset hound and wolf are obvious,
but dogs have also changed in ways that are more than skin (or fur) deep.
One recent study shows how by bonding with us and learning to work
ogether with humans, dogs may have actually become worse at working together
Their pack lifestyle and mentality appear to be reduced and are far
as a species.
less prevalent even in wild dogs than in wolves.
But, Yale's Laurie Santos says, dogs may have compensated in other
interesting ways. They've learned to use humans to solve problems.
"Several researchers have presented dogs and wolves with an impossible
problem (e.g., a puzzle box that can't be opened or a pulling tool that stops
working) and have asked how these different species react," Santos explains.
Researchers have found that wolves try lots of different trial and error tactics to
solve the problem - they get at it physically. But at the first sign of trouble, dogs
do something different. They look back to their human companion for help. This
work hints that dogs may have lost some of their physical problem-solving abilities
in favor of more social strategies, ones that rely on the unique sort of cooperation
