Your dog has both Siberian husky and Alaskan malamute traits. The size, curled tail, and digging behaviors fit a malamute, while the blue eyes, energy level, and love of playing and being with other dogs fit a husky. Your dog seems to possibly be an Alaskan malamute/Siberian husky mix or some other sled dog breed. Consider DNA testing if you'd like a definitive answer.

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