Kim O-Jin-gwa Isanghan Dongmuldeul

Veterinarian Kim Ohjin was unexpectedly summoned by a dragon. After successfully treating the dragon's pet, he returns home... only to find himself in another world. "Animals in another world are still animals, right?" I was a vet barely scraping by in the real world, but now, in this strange new world, I'm a renowned doctor? With my old clinic on the verge of closing, I'm setting my sights on a new opportunity—my second clinic, and, hopefully, a big success!

(Source: Naver, translated)