The fauna is characterized by a great variety of species. The Danubian plain is the habitat of Brown hare, wolf, European souslik, Field mouse, partridge, quail, Sinya garga, rook, etc.; the Danubian swamps and islands are the habitats of Dalmation pelican, Lopatarka, Glossy ibis, many species of herons and ducks, Pygmy cormorant, etc.
Some species build their nests only in the Srebuma reserve. In the woods one can find Wild boar, Roe deer; in Dobrudja - Bustards, Steppe polecat, Skachashta  mishka, hamster. In the beech forests of Stara Planina can be found Salamander, Hazel grouse, Dormouse; in the oak forests - Red deer, Roe deer, Badger, etc.; in the rocky regions - Rock partridge Chukar, Haidushka garga, in the Dzhendema reserve - Wild goat: rarely - bear. The Rila-Rhodope region is inhabited by bear, wolf, Roe deer, Red deer, Fallow deer, Wild boar, Wild cat, Wild goat, fox, Capercaillie, Hazel grouse, Vulture, eagle, pheasant, Rock partridge, Brook trout, Common carp, Chub, etc. In the Thracian region - Orizishtna mishka, Ring-necked pheasant, Thracian rock partridge, etc. Along the Black Sea can be found Pink pelican, Great cormorant, Recurvirostra avocetta, Black-necked stilt, Sea-gulls, etc., in the southernmost regions-jackal. The rivers, the lakes and the dams are inhabited by carp, sturgeon, perch, Spined loach, Balcan trout, pike, Sheat-fish, Ernys orbicularis. In the Black Sea - sturgeon, carp, Black Sea trout, Gray mullet, mackerel, etc., three species of dolphins and a seal (Belokoremen tyulen).
     In Bulgaria mouflon, nutria, aurochs, Elen sika, Saimo irideus, Byal amur, Hypophthalmichtys molitrix, etc. have become acclimatized. There are good conditions for hunting.