Chris Brown could go to prison for monkey business.

Literal monkey business.

Breezy is facing six months away because he didn't register the baby capuchin monkey named Fiji that he got for his daughter Royalty.

Several people complained to the authorities about Brown's exotic pet.  So the California Dept. of Fish and Wildlife raided his home and found the contraband primate. He gave the wild beast up, but could still be charged with having a restricted species without a permit.

Brown's lawyer, the very busy Mark Geragos, pushed back against the potential charge.

"As I leave my office in Downtown L.A. and walk past people sleeping on the street on my way to defend people charged by the City Attorney with selling medical marijuana ... now spending taxpayer money on investigating monkey business, this completes the circle on his absurdity."