Cops know Kroy Biermann and Kim Zolciak's Georgia address by heart now -- they've been there enough -- but their latest visit wasn't for the couple fighting ... cops say the problem is their massive dog.
TMZ obtained a Milton PD report in which officers say they slapped Kroy with a citation Saturday due to a neighbor's complaint about his dog, Stone, getting loose and allegedly terrorizing a neighbor.
According to the docs, the neighbor called police after spotting the dog running free in the neighborhood, and claimed Stone had been "aggressive" toward her.