Mr Bisson said the police had been overwhelmed by the response since taking to Facebook on Monday.

BBC: Thor the German Shepherd

Dog handler Dave Bisson said lots of places would be suitable including unused hotels, old farm buildings or office blocks.

BBC: Thor the German Shepherd

In 1861, professional photographer Auguste-Rosalie Bisson had climbed Mont Blanc with 25 porters hauling his camera and portable darkroom up to the summit.

WSJ: Photographic Balancing Acts | Swiss Alpine Museum | He Cut a Fresh Path in Mountain Photography | By Michael J. Ybarra