You could use a Mandarin combination of rat and dog. Sorry, not sure of the pinyin spelling.
Lau Shu Gao .... pronounce like Lao Shoe Go
Lau Shu = rat or mouse
Gao = dog
Lau Shu Gao .... pronounce like Lao Shoe Go
Lau Shu = rat or mouse
Gao = dog