I'm always amazed at the incredible sensitivity of a dog's nose, aren't you? I've heard a Bloodhound's nose is 100 times as keen as a human's nose, and a German Shepherd's 40-50 times. No wonder they save so many lives by tracking missing persons or felons and by sniffing out bombs and drugs. Now in recent years, I've heard about still another use of their great natural talents – cancer detection!

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