The fauna of the Friulian Dolomites Natural Park is very rich: it depends mainly on the environmental variability of this Alpine-mountain area and poor human settlement in the territory.
The Friulian Dolomites Natural Park is the home for stable populations of chamois, deer, marmots, grouse, black grouse, roe deer and a large colony of wild goats in continuous expansion.
A sign of the high level of naturalness in the Friulian Dolomites Natural Park environment is the density of the golden eagle population; in every valley is estimated the presence of a breeding pair.
The Friulian Dolomites Natural Park is one of the north-east Alpine protected areas with a considerable environmental variability and very little human impact. Some arduous areas are the animals pristine kingdom and human presence is almost nonexistent.
Thanks to these environmental features and a strict management the Friulian Dolomites Natural Park is habitat to large populations of animals with high biological value such as the golden eagle, the b, the peregrine falcon, the marmot, etc.
For many of these species the Friulian Dolomites Natural Park is carrying out specific research projects that take into account both the typical eco-ethology and biology sides of the species and those of sanitary type (Health Monitoring Plan and Recovery Center of raptors of Andreis).
The presence of ungulates, martens and badgers can refer to the whole area considered, while the bear presence was rarely reported both based on recent sightings (1997), and on several presence indicators. The area, however, has a remarkable suitability for the species. Even the skunk is still present in the valley floors, but it does not seem to be common at all. Among small mammals it must be quoted the Chionomys nivalis, which is well distributed in all boulders scattered in the area. The rare Mioxide Eliomys q. quercinus for now it is present in just a single location, while hazel dormouse and Myoxus are spread everywhere. Particularly abundant fauna of bats, for now investigated in a rather discontinuous way, depending on the presence of bone remnants in the caves.
The considerable extension of the Friulian Dolomites Natural Park and its poor human settlement facilitate the presence of all grouse present in the Alps and in particular the grouse, the black grouse, the hazel grouse, ptarmigan. In the more southern areas there are diurnal and nocturnal birds of prey, such as the eagle owl, the harrier, the peregrine falcon and the black kite.
Notable is the density of the golden eagle population estimated at 8 nesting pairs within the Friulian Dolomites Natural Park or along its borders. Being a super-predator with a rather eclectic diet, such presence reveals a good complexity of the food chain including hoofed mammals, rodents and bird species also of international significance. There is no shortage of griffon vultures, while it is worth highlighting the presence of species linked to little disturbed forest habitats, such as the honey buzzard, the black woodpecker, the northern owl and the little owl.
There are also, though to a lesser extent than in the eastern area of the region, species of great importance such as the corncrake and the rock partridge.