Wolves howl when they miss a friend

Researchers from the Wolf Science Center (Ernstbrunn) around Dr. Friederike Range investigated the mechanisms driving call production in wolves. They found out that vocalization is mainly driven by social factors, not by stress: stress hormones had no influence, but the wolves howled when one of them left the pack for a walk. If an alpha leader left, they howled more. For the researchers this gives evidence about the highly differentiated social relationships among wolves.

The results have been published in "Current Biology".

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