There is not a more eerie or beautiful sound at night than the musical extravaganza of a howling wolf pack. Because of the melody of voices, it often sounds like you are surrounded by scores of wolves.
In truth, there are usually no more than five to eight wolves howling in a pack. The secret is that the wolves are always careful not to duplicate each other. Each wolf assumes a unique pitch, respecting the distinctiveness of the other members the pack. While the notes may change, as in any beautiful song, one wolf will not copy the pitch of another.
Interestingly, this respect for the individual only emphasizes the true unity of the group. They are one, but they are individuals, each contributing to the organization in their own unique way. Every wolf has his own voice. Every wolf respects the voice of every other wolf.
– Twyman L Towery, Ph.D.
Wisdom of Wolves