All serious incidents should be reported to Northamptonshire Police on either 101, or in an emergency only 999.
Under the Dangerous Dogs Act 1991 (as amended) certain types/breeds of dog are prohibited:
Pit Bull Terrier
Guidance issued by DEFRA on identifying dangerous dogs can be found in Controlling your dog in public on the Defra website.
If you wish to report a suspected banned breed, contact should be made with Northants Police on 101.
The Councils dog warden is able to provide further advice on information discussed in this section and can be contacted on 01933 231960