Mating season

This video is the perfect reminder of the sheer power of the bison. It's also a good reminder of why the National Park Service advises you to stay at least 25 yards from the massive animals.

Soon, thousands of tarantulas will be crawling through Colorado and looking for love during mating season.

Love is in the air in Yellowstone National Park and it's not just because Valentine's Day is almost here. New video shows one of the wolf packs in the park as mating season approaches.