Male, female. Old, young. Which alpacas provide best sheep protection?

Updated May 10 2016 - 9:58am, first published May 2 2016 - 7:56am
ON GUARD: Research examines how effective alpacas are in protecting livestock from predators.
ON GUARD: Research examines how effective alpacas are in protecting livestock from predators.

SCIENTISTS are looking into how effective alpacas are in protecting livestock from predators.

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