And it wasn’t a Saint Bernard. Croatian rescuers are praising a dog who protected his injured owner from freezing high on a snowy mountain, keeping him warm for 13 hours in the dark until he could get medical attention. “Friendship and love between man and dog know no boundaries,” the county’s mountain rescue service wrote on Twitter on Jan. 4, with a photo of the dog lying on top of his master on a stretcher. The accident occurred late on Jan. 1, more than 1,700 meters (5,600 feet) up Mount Velebit, which stretches along Croatia’s Adriatic Sea coast. Rescuers say both man and dog—an Alaskan malamute called North—slipped and fell about 150 meters (500 feet). The hiker seriously hurt his leg but the dog was uninjured, and used its body heat to keep him warm as temperatures dropped after nightfall and rescuers strove to locate them. “[North] curled beside him …