How Leeches Are Helping to Save Endangered Species

From SciShow.

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Leeches are bloodsucking parasites, and you wouldn’t think they’re great at protecting other species. Yet for some conservationists, these little vampires are one of the best tools available for conserving endangered and threatened species.

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Sources: https://docs.google.com/document/u/1/d/1YBwkHENiYVvUQo67NFviXSCUpJ64TD-UfVHbLbriXvY/pub