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Interlaken is one of the most dog-friendly resort towns in the Alps: dedicated 24/7 vet line, multilingual hospitality (German, English, French standard), free water bowls everywhere and a wide network of dog-friendly trains, boats and funiculars. The four practical hurdles: high vet costs, Bernese leash duty in forests 1 April-31 July, altitude limits above 2320 m on Jungfraubahn, and summer paraglider landing zones to plan around.