If you have been attacked or bitten by a dog, contact the police on 999 if it's an emergency, or 101 if it's not an emergency.
Usually, dog-on-dog attacks are due to natural dog behaviour. Dogs can become aggressive when guarding their territory, defending their offspring or protecting themselves. However, sometimes serious attacks can occur, leaving animals in distress and / or injured.
All dogs should be kept under close control at all times and the best way to do that is to make sure that your dog is on a lead. Most incidents reported to the Council involve both parties' animals being off the lead and therefore not under the effective control of the people walking them.