Fears over fox sighting.
Scottish Natural Heritage have appealed to people in the Western Isles to call with sightings of foxes.
They are not indigenous to the islands and the agency fears they could prey on native wildlife.
SNH said foxes have been spotted in Lewis and Harris.
David MacLennan, area manager, said it was a mystery how the animal reached the Western Isles.
The fox may have been brought in deliberately by animal lovers to save it before the recent legislation banning hunting with hounds came in.