Ten years ago, Shannon Donahue spent her first winter in Alaska on an Aleutian Islands homestead near False Pass, a skiff ride away from provisions and from people except for her boyfriend Tim Walsh.

When Walsh wanted to return for another season, he bribed Donahue with a puppy. That dog, Seamus, spent its early months running beaches with a wild fox. Donahue, 36, and Seamus have now settled in Haines.

Donahue is executive director of…