By Larry O'Hanlon, Discovery News
Feb. 8, 2006— Rats need only one sniff to take their bearings on a tasty morsel, say researchers who have discovered what may be the olfactory equivalent to stereo hearing in the common rodents.
It turns out that rats use their two nostrils with what appears to be far more efficiency than humans do, and may be a lot like some other scent-oriented animals.
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