They're wild and meant to stay that way. Nature dictates that the wolf be an efficient predator in order to survive. While fulfilling this role the wolf occupies an important niche in the ecosystem. All shades of gray and tan, even spotted. People sometimes breed wolves and dogs creating wolf hybrids that can be mistaken for wolves.
Hybrids make undesirable pets.
Attacks upon people and livestock by hybrids may lead people to incorrectly expect similar behavior from wild wolves and hamper wolf recovery. Hybrids seldom survive long in the wild. Wolves eat mostly mammals such as moose, elk, deer, beaver and marmot. They were probably the major predator in the North Cascades for thousands of years until the later 19th century. Wolves often eat the sick, weak, diseased, injured, and the very young or old.