The pronunciation of "Mo Dog" is: mò gǒu, and the pronunciation of "Hui Dog" is: huì gǒu.

It should be noted that the word "Hui Dog" may not be used in regular contexts. Less commonly, it may be a term or name from a specific field, a personal creation, or from a specific cultural context. If this is a specific word or has a specific definition, more background information may be needed to accurately understand its meaning and pronunciation.