A man was bitten on the leg by a small dog as he walked along a street.
The man was walking along High Street in Cottingham some time between 3.30pm and 3.50pm on Wednesday, September 2, when he was bitten.
It is believed the dog was either a white Scottie or a westie.
The woman walking the dog did not stop following the incident.
She was in her mid to late 50s, about 5ft 4in with white hair.
Witnesses, or anyone who knows anything about this incident, can call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.