Meet Kirsty, Betty and Desmond — the giant rats fighting the illegal animal trade

Meet Kirsty, Betty and Desmond.
They are giant African pouch rats; an animal that has a sense of smell likened to sniffer dogs at airports.
They, and eight of their colleagues, have spent the past few years learning how to bust the illegal wildlife trade.
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Meet Kirsty, Betty and Desmond — the giant rats fighting the illegal animal trade