One Wolf Starts Howling and Another Joins In—What Are They Saying?
From A-Z-Animals:
Silas begins with a long, rising howl. Before he can finish making his announcement to most of Westchester County, Nikai lifts his muzzle and joins him.
The two wolves do not exactly land on perfect harmony, but subtlety was never the point. Within seconds, one voice has become a full duet.

