From The Guardian:
In the pre-dawn darkness of Sierra de la Culebra, Zamora, Spain, a sudden howl pierces the cold. More join in, until the baying chorus echoes all around. As the sky begins to lighten, their shapes emerge: first the alpha male, and then the rest of the wolf pack, appearing in the twilight where light and darkness merge.
In Europe, this large carnivore was hunted for centuries and almost exterminated, surviving only in inaccessible or sparsely populated areas. Now, thanks to changing attitudes and increased protection, Europe’s wolf population is slowly recovering, and the apex predators are gradually returning to their former territories.