During the excavation of the Azilian levels from the site of Aizkoltzo in 2003 several vertebrate remains were found. Mammal species are represented in the site by, five rodents, two insectivores, five artiodactyls and three carnivores, the reptilians by one saurian and three ophidian and the amphibians by one anuran. The vertebrate assemblage indicates a humid temperate climate quite similar to that occurring in the area at present day. The macromammals assemblage of Felis silvestris, Meles meles, Sus scrofa and Capreolus capreolus is usual in the Postglacial of the Cantabrian Basin