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Cancer-sniffing dogs are saving lives

Dogs trained to "sniff out" cancer have played an increasing role in early detection. A dog's sense of smell is so refined, it may even detect what type of cancer its smelling. Alf... More Dogs trained to "sniff out" cancer have played an increasing role in early detection. A dog's sense of smell is so refined, it may even detect what type of cancer its smelling. Alfonso Van Marsh reports. Less

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