The Turkic languages and dialects are spoken across a vast area from Eastern Europe and the Mediterranean to Siberia and Western China, from the Pacific to the Baltic Sea, and from the Arctic Ocean to the Persian Gulf. Turkic belongs to the Altaic language ‘family’. The nature of this relationship, whether genetic or the result of long-standing interaction, is much debated. Regardless of the Altaic theory, the Turkic material can be useful when studying the ancient history of the Koreans. The word B²ẄK²L²I in the Orkhon inscriptions from the 8th century AD refers to the ancient Korean kingdom and empire of Goguryeo (37 BC – 668 AD) in all probability. According to the 12th century Samguk Sagi and the 13th century Samguk Yusa, a prince from the kingdom of Buyeo (2nd century BC – 494 AD), named Jumong, fled after a power struggle with other princes of the Buyeo court and founded the Goguryeo state in 37 BC in a region called Jolbon Buyeo. Buyeo was an ancient Korean kingdom located from today’s Manchuria to northern North Korea, from around the 2nd century BC to 494. Its remnants were absorbed by the neighboring and brotherhood kingdom of Goguryeo in 494. There were official positions in Buyeo such as ‘Maga (馬加 “horse- ga”)’, ‘Uga (牛加 “cattle-ga”)’, ‘Jeoga (猪加 “pig-ga”)’, ‘Guga (狗加 “dog- ga”)’ named after domestic animals according to the Chinese historical texts Sānguózhì (三國志, The Records of the Three Kingdoms). The word -ga (加) had the meaning of ‘clan chieftain, tribal chief’. This word was also used in Goguryeo. In the present paper we will treat the words for dog in the modern Turkic languages. We will focus on the linguistic analysis of the terms. The main materials are from various dictionaries. The materials in Dīwān Luγāt at-Turk and in the etymological dictionary by Sir Gerard Clauson (= ED) are also used.