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Dogs Off-Leash on Beaches: Problem or a Good Thing?

Off-leash dogs can curb E. coli at beaches, but the jury is still out on whether or not leash-less surf-loving dogs benefit beach ecosystems.

May 20, 2014
9:45 AM EDT
A border collie patrols the beach as part of a study on reducing E. coli contamination. | Elizabeth Alm