As any dog-owner knows, canine animals explore with their mouths. They lick. They chew things they shouldn’t. And sometimes, they eat things they shouldn’t. But it was still a surprise when Northwest Trek veterinary staff discovered that Darci the gray wolf had accidentally swallowed a rock. What was amazing was how it came out – and how Darci helped them every step of the way. X-rays and Crates “Hi, Darci, you’re okay. There’s a good girl,” called keeper Haley Withers, peeking through the window of a large metal crate in the back of a van. A black nose appeared at …