How dogs smell | AFP Animé

Videographic on why sniffer dogs are so effective. Rescue workers dug through rubble in a wrecked district of Lebanon’s capital in search of possible survivors from a mega-blast at the adjacent port one month ago, after scanners detected a pulse. A sniffer dog used by Chilean rescuers on Wednesday night responded to a scent from the site of a collapsed building in the Gemmayzeh area.VIDEOGRAPHICS

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