In this photo provided by Mandy Iworrigan is Nanuq, in the middle with Brooklyn Faith, after the 1-year-old Australian shepherd was returned to Gambell .
A 1-year-old Australian shepherd took an epic trek across 150 miles (241 kilometers) of frozen Bering Sea ice that included being bitten by a seal or polar bear before he was safely returned to his home in Alaska.
Nanuq, a 1-year-old Australian shepherd, went missing last month while his family was visiting relatives. Except for a swollen leg, with bite marks from a seal or polar bear, Nanuq was in good health.