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No! They do this mainly to call their group to the hunt. It happens that they howl much more frequently on full moon nights because the moonlight is a highly favorable condition for locating their prey. After the hunt, the sound also serves to bring the pack back together: the wolves are able to recognize each other just by howling each other. “But they can also howl when there is no moon. After all, they hunt every day”, says biologist Ana Maria Beresca, from the Zoological Park Foundation of São Paulo. The other function of howling, identical to the barking of dogs, is to mark their territory. Two groups intending to occupy the same region can deduce the size of the rival flock: the diversity of the howls reveals the number of animals.
Wolves live in North America, Greenland, Europe and Asia. In the past, their howls could be heard across the United States, but today wolves are among the most endangered animals. The problem is that they prey on cattle and other domestic animals, so farmers often offer bounties for their fur, making them highly hunted. Although they are feared, they rarely attack humans, preferring, in general, to avoid them.