Canine Lords

"Canine Lords are Canine People who have inherited the mysterious ancient power of Lord Yama and his brothers."

- Gyugung to Ship Leesoo about the types of Canine People.

Canine Lords (견족, gyeonjog) are powerful humanoid Canine People who have inherited the mysterious ancient power of Baylord Yama and his brothers. This "mysterious ancient power" is very likely refers to the power of Canine Transformation.

About
They are the "leaders or executives" in The Cage or are generally in higher positions than the Mutts. They will fight every 10 years in the event known as the Canine Tooth Festival to compete over the title of the 2nd strongest in command after Lord Yama. This event was very likely created to gauge the performance of the leaders over the years, keeping their strength in check, and to motivate them to become even more stronger for big prestige in The Cage.