What are the requirements for transit pets in korea?

(I have a stopover in south korea before my destination which is in vancouver.... i read korean customs and regulations but nothing specific requirements for pets having a stopover. All was written there is for importing of pets in korea and its requirements, including pets are mandatory having a microchip. Which is unnessesary for a 4hrs stay in the airport.)
Maybe calling the airport or any international airport would be a good idea.