Endangered wild animals refer to remarkably reduced wild animals due to natural or artificial environmental aggravation like lessen of inhabitation or worsening of living environment. Endangered wild animals are 1 species of amphibia, reptilia, 1 species of mammal, 3 species of insecta, 9 species of birds, 1 species of invertebrate animal.

Followings are the list of exterminatory crisis wild animals.
Yellowish brown serpent, a Steller's sea lion., Lucanus maculifemoratus, Polyphylla laticollis, Eumenis autonoe, chinese egret, white stork, Platalea leucorodia, white-tailed sea eagle, Steller's sea eagle, Aquila chrysaeto japonica, spoon-billed sandpiper, snail and black-faced spoonbill.

Preserved wild animals have high academic value.
They are internationally preserved wild animals and Korean's indigenous wild animals and decreasing animals. Preserved wild animals in Jeju are Amphibia, reptilia 2 species, mammal 1 species, Insect 5 species, birds 33 species and invertebrate animal 17 species.

Followings are the list of preserved wild animals.
Amphibia, reptilia are Kaloula borealis, Rana plancyi choseni, mammal is northern fur seal, insecta are Lethocerus deyrollei, Gymnopleurus mopsus, Chrysochroa fulgidissima and Fabriciana nerippe.

Birds are red-throated diver, pelagic cormorant, bittern, Schrenck's bittern, brent, bean goose, Anser cygnoid, whooper swan, baikal teal, Chinese merganser, osprey, black kite, goshawk, Japanese lesser sparrow hawk, buzzard, imperial eagle, einereous vulture, Circus cyaneus cyaneus, marsh harrier, merlin, hooded crane, white-naped crane, Pelvetia siliquosa, bustard, Haematopus ostralegus osculans, long-billed ringed plover, Australian curlew, eagle owl, Korean wood owl, fairy pitta, Terpsiphone atrocaudata and crested lark.
Invertebrate animals include Antipathes japonica, inea, Peudomaretia alta and other 14 species.