Mammals:
* Forest: Korean water deer, red fox, raccoon dog, Siberian weasel, wild boar, Korean black bear, Korean musk deer, and Japanese macaque (near the southern border).
* Mountain: Mountain goat, Himalayan marmot, Siberian weasel, and Korean black bear.
* Coastal: Harbour seal, grey seal, Korean grey seal (critically endangered), and various dolphin species.
* Urban: Rats, squirrels, stray dogs and cats, and even the occasional raccoon dog or wild boar making their way into cities.
Birds:
* Forest: Eurasian jay, Eurasian magpie, great tit, and common greenfinch.
* Coastal: Various seabird species like gulls, cormorants, and terns.
* Wetlands: Waterfowl such as ducks, geese, and swans, as well as herons, egrets, and other wading birds.
* Urban: Common pigeons, sparrows, and crows are frequent sights.
Reptiles and Amphibians:
* Forest: Snakes like the Korean racer snake and the Korean cobra.
* Water: Various frogs and salamanders.
Fish:
* Coastal: Tuna, mackerel, cod, and various other fish that are commercially fished.
* Freshwater: Carp, catfish, and other freshwater species.
Insects:
* Forest: Butterflies, moths, beetles, and other insects.
* Urban: Common houseflies, mosquitos, and other urban-adapted insects.
Other:
* Marine life: Various jellyfish, squid, and other marine invertebrates.
Endangered Species:
* Korean grey seal: The most endangered mammal in Korea.
* Korean musk deer: A critically endangered species due to habitat loss and poaching.
* Korean black bear: Classified as a vulnerable species.
* Other endangered animals: Several birds, reptiles, and fish species are also facing threats.
It's important to note that wildlife populations are constantly changing due to factors like habitat loss, climate change, and human activity. The list above is not exhaustive and provides a general overview of the animals you might encounter in South Korea.