Wolf Howling In Yellowstone National Park Lamar Valley

My wife and I saw this wolf howling while visiting the Lamar Valley in the northern portion of Yellowstone National Park. Specifically, this video was filmed near Soda Butte Creek. As you can see, the wolves in the Lamar Canyon Pack had killed and eaten a big bull elk. We caught the aftermath as the wolves howled back and forth for several minutes while the ravens picked over what remained of the elk. We personally saw two howling wolves from the Lamar Canyon Pack: the grey pup in the video and a larger black wolf that was several hundred yards from this one and wasn't pictured in the video.