Tucked into a lush swath of woods in Washington’s South Puget Sound—where light filters through mossy trees and ravens circle overhead—sits Wolf Haven International. The 82-acre sanctuary is home to 56 residents, including gray wolves, coyotes, wolf dogs, endangered Mexican gray wolves, and critically endangered red wolves.

Photographer Annie Marie Musselman, who built her artistic career telling the story of an animal rehabilitation center, first learned of Wolf Haven in 2010. She had received a grant from Getty Images to collaborate with an ad agency on a project for a nonprofit. Her original plan to document rescued chimps and orangutans in Indonesia was called off when she became pregnant and doctors encouraged her to