Until the beginning of the 20th century, the subspecies Canis lupus signatus occupied practically the entire Iberian Peninsula.
In Portugal, the disappearance of the wolf, particularly along the coast, became evident from 1940 onwards. The wolf's situation worsened with the drastic reduction of its habitat in the 1970s.
Today, the Iberian wolf occupies only 20% of its original distribution area, with two population centers in Portugal, separated by the Douro River. In the north, it is found in almost all of the districts of Bragança and Vila Real and in parts of the districts of Porto, Viana do Castelo, and Braga; in the south, it occupies parts of the districts of Aveiro, Viseu, and Guarda.