Contact the embassy or consulate for South Korea and ask about their requirements. It really depends on the individual country. For e.g., you cannot import almost any mamma to Australia because there is no rabies in Australia and they want to keep it that way. If they allow importation of animals, they may also require a quarantine period, and depending on the length of that, and what is involved, you may decide its not worth the stress on your animal.
0.1 Ball Python, 0.1 Creamsicle Cornsnakes, 1.0 Amelanistic Cornsnake, 1.0 Ghost Cornsnake, 1.0 Motel Amelanistic Cornsnake, 1.0 Okeetee Cornsnake, 0.1 Striped Amelanistic Cornsnake, 0.1 Silver Phase Miami Cornsnake, 0.1 Sunglow Cornsnake