Wolves are known for their howling calls, and a new study shows that their howling might be a form of communication. When a pack leader goes out of sight, the wolves in the study howled more and for a longer period of time than if a subordinate wolf was missing.
With "My Queue" you can quickly save videos to watch later.
To add an item to your queue just click the sign next to the video.
Once you've added a video visit "My Queue" to start watching!