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John, I suspect even a dog knows not to pee into the wind...
On Tue, Jan 14, 2014 at 10:03 PM, John Clement
<clement@hal-pc.org> wrote:
Could it be a wind effect? Since the wind tends to blowfrom W to E
this would carry the scent to the side and predators ofdogs would be
more easily sensed than if the wind were blowing into the face. Ofare societies
course one might expect that a "tail" wind would be ideal. But
perhaps the behavior is left over and no longer has any survival
value. Being able so sense the magnetic field does have some
advantage in being able to navigate. I understand there
where they use absolute compass directions rather thanreferring to L
or R and people in these groups always know the direction of thelines for
compass points. Knowing this may be partially due to humans being
able to sense the magnitic lines. They pointed out in the article
that there may be a magnetic sense in humans.
John M. Clement
Houston, TX
On 1/14/2014 1:46 PM, Anthony Lapinski wrote:
I've heard of birds flying along Earth's magnetic field
www.livescience.com/42317-dogs-poop-along-north-south-magnetic-linesnavigation, but I am baffled by this recent story below:
mechanism, but.h
tmlTrue, there are interesting questions of purpose and
competitivethe leading question would concern the survival value of such
orientation.
Given that dogs sample the odors of other animals, what
advantage might be gained in this way?
Brian Whatcott Altus OK
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--
Todd K. Pedlar
Associate Professor of Physics
Luther College, Decorah, IA
todd.pedlar@luther.edu
or pedlto01@luther.edu
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