1.6M views · 775 reactions | Lone wolves no more - roughly 500 wolves inhabit Yellowstone today, following their reintroduction to the park. | National Geographic TV | Facebook

18K views · 6.5K reactions | Our wolf pack spreading cheer through some caroling!  Wolves communicate visually in sophisticated ways, using body posture, facial expressions and tail positions. Audible communication is the howl, which bonds the pack, helps them reassemble and is sometimes just for play.  : 9-year-old Darci the gray wolf with siblings Canagan and Tala howling in the background from keeper Haley | Northwest Trek Wildlife Park | Facebook