The diversity of various types of animals, which inhabit and populate a defined ground or water area, is the animal kingdom. The first reports on the richness and diversity of animal life in Azerbaijan can be found in travel notes of Eastern travelers. Animal carvings on architectural monuments, ancient rocks and stones survived up to the present times. The first information on the animal kingdom of Azerbaijan was collected during the visits of naturalists to Azerbaijan in 17th century. Unlike fauna, the concept of animal kingdom covers not only the types of animals, but also the number of individual species.

The animal kingdom of Azerbaijan is very rich, partly due to diversity of its natural complexes. There are 97 species of mammals, 357 species of birds, 67 species of reptiles and amphibians, 97 species of fish and over 15 thousand species of invertebrates in Azerbaijan.

People use the animal kingdom resources for food, as well as for raw materials in industries and working power in field works. Vertebrates are used to produce meat, eggs, feather, leather, horns, as well as butter and technical oil. Their products are used to produce drugs, perfumes, fertilizers and fodder. The natural habitat of various types of animals is very different within the country. Some species populate special restricted areas (lakes, parts of mountainous areas) while others are spread throughout the country. For example, passerines can be found anywhere in the territory of Azerbaijan. Protozoa parasites are also registered in all areas of the country, depending on natural habitat of carrier animals (cattle, poultry, etc.). Among mammals, jeyran gazelles populate plain areas, Caucasian goat inhabits the Major Caucasus areas, most species of birds can be found in forests, some in water basins. Pest insects occupy different agricultural fields, while others populate defined biotopes only.