ManMan/蠻蠻

ManMan/蠻蠻 - Chinese Mythtical Beast

In the Luo River(洛水), there are many 蠻蠻(Man man). Their bodies are like rats, and their heads are like turtles. Their sounds are like barking dogs.

《山海經·西山經》

又西二百里,至剛山之尾。洛水出焉,而北流注于河。其中多蠻蠻,其狀鼠身而鼈首,其音如吠犬