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        Sniffing Out Dogs' Senses

        Discover just how powerful a dog’s sense of smell can be in this video from NOVA: Inside Animal Minds: Dogs & Super Senses. Fern, a trained sniffer dog, is put to the ultimate test: Can she locate a canister of meat hidden 20 feet underwater? As a passenger on a boat, Fern must determine the exact spot over which the canister was dropped in a lake. After about an hour of crisscrossing the lake, Fern successfully pinpoints the location. Canine smell is so acute because a dog’s nose splits the flow of incoming air into separate streams—with one dedicated solely to smell. A dog’s brain is also specially configured to make sense of the olfactory information it receives.

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