We offer custom wildlife watching and custom photography tours into Yellowstone National Park. Must pay park admission fee per person or have an annual pass. Winter is the best time to experience wildlife in Yellowstone, except for hibernating bears. With bears in their dens, bison, elk and moose stay lower and are more easily visible from the road. This also means wolves stay lower in the valleys, for a better chance of viewing. Wolves have an easier time moving on top of snow, which allows them to hunt, explore and protect their territory from rival packs. Snow brings out foxes, coyotes, otters, and other possible predators, too.