The wolves inhabiting the valley come from Italy and hence are called Abruzzo wolves. They are distinguished by their white mask and black line on the tibia. The wolves live in packs of 2 to 5 on average. The wolf is a carnivore which feeds mainly on ungulates such as deer or chamois. Only the dominant pair of the pack breeds. The cubs are born in a den in late spring. Although the preferred habitat of the wolf is the forest, it ventures into the alpine pastures in search of easy prey such as flocks of sheep.