The fauna of the Korosten district is diverse and is represented by mammals (more than 30 species), birds (about 200 species), reptiles (7 species), amphibians (10 species), fish (18 species), insects (about 500 species), crustaceans, and molluscs.
Mammals include even-toed animals, carnivores, lagomorphs, rodents, bats, and insectivores.
Wild boar, red deer, roe deer are common among equids. Wild boar has become very widespread in the area in recent years due to the fact that some of them migrate from the Chernobyl exclusion zone. There are especially many of them in the northeastern part of the district. As a rule, wild boars inhabit forest slums or large wetlands. In search of food, they cover considerable distances. The real decoration of our forests is the common moose. The population of moose near the district is insignificant and fluctuates over the years at no more than 50-80 heads, so it would be advisable to completely prohibit hunting them. The red deer in the district has a limited area of distribution – the Ushomyr reserve and hunting farm, where there are about 30 of them. There are much more roe deer in the territory of the district, which are widespread in forests and bushes. Their number in our area reaches 300-400 heads in some years.
The most common predators in our region are the fox, marten, ferret, and weasel. Wolves have appeared near the district in recent years. These are agile and strong predators that cause great damage to animal husbandry and hunting, and can attack humans. Hunting for them is allowed all year round and financially encouraged. Such predators as: badger, raccoon dog, otter are quite rare in our area.
Red-eared hares are widely found in fields and forest edges, occasionally you can also meet a white-eared hare, which is listed in the Red Book of Ukraine.
Among mammals, rodents are the most numerous. The river beaver has settled on almost all the rivers of the region, the population of which is more than 300 individuals. The river beaver has the most valuable fur of all fur-bearing animals of Ukraine, and its fat has medicinal properties.
A rare resident of our forests became a valuable fur animal – the common squirrel. Other rodents are quite numerous, namely: mouse vole, wood vole, house vole, red and wood vole, water rat, gray rat.
Insectivores are represented by woodpeckers, moles, hedgehogs, and bats are bats.
The bird life of the Korosten Region includes about 200 species, including resident, migratory and seasonal ones. Forest birds are represented by black, variegated, green woodpeckers, cuckoos, birch woodpeckers, nightingales, titmice, flycatchers, thrushes, robins, nuthatch, owls, wrens, woodpeckers and only a few examples of capercaillie and grouse. Wild ducks, moorhens, warblers, waders, waders, gulls, sandpipers, gray herons, and snipe live near water bodies and marshes.
In our area, there are a lot of sparrows, gray crows, jackdaws, pigeons, there are also rooks, turtledoves, skylarks, swallows, finches, hoopoes, plovers, white storks, owls, jays, magpies, starlings, grebes, buzzards, hawks, goshawks and others
Among the reptiles found in our region are the bog turtle, the pond lizard, the common viper, and the copperhead. Amphibians are common everywhere, these are: pond frog, green frog, gray frog, sharp-eyed frog, common newt, grass frog.
Silver crucian carp, perch, roach, pike, walleye, carp, bream can be found in the reservoirs of our area. Catfish, carp, bream, tench, tench, bream, crucian carp, ruff, golden crucian carp are less common.
Insects are the most common among the animal world. Bumblebees, hornets, wasps, mosquitoes, midges, flies, ants, geckos, bark beetles, beetles, sawflies, cabbage beetles are the most characteristic of our area.