Since the North Cascades National Park is so large, it contains many environments, including temperate rainforests and dry ponderosa pine forests. As you hike through rocky meadows, you may hear the call of the tiny pika.
Look out for gray wolves, wolverines, peregrine falcons, bald eagles, and salmon. There is an effort underway to restore the population of grizzly bears to the North Cascades.
These bears do not generally bother humans as long as they store food properly and engage in other safe practices. You will rarely run into a grizzly, but it is essential to be prepared.