Dog control officers in Northland have seized a dog who bit off a chunk of a man's lip.
Police say the man was walking home drunk after a night out on Friday, when he stumbled against a fence on Mangakahia Road in Kaikohe.
The dog - who was in a secure yard on the other side - jumped up and tore a piece out of the man's upper lip.
Hospital sources say ambulance officers managed to recover the tissue, but surgeons could not reattach it.
The 21-year-old was discharged from hospital on Monday.
Police are investigating the incident.