Yes, if you can prove that the dog injured you. Although the laws on owner responsibility differ between states, your neighbor is responsible for their dog’s behavior at all times in California, assuming the dog was not provoked. If their dog has managed to get onto your property, they are at fault for not properly restraining or leashing their dog. Most localities have strict leash laws to prevent dogs from entering other people’s properties at all. If the dog causes property damage or physical damage to you or a loved one, the dog’s owners are responsible. Unlike other states, California does not require the victim to show that the dog’s owner knew about the dog’s possibly violent tendencies before the attack. As long as you can show that your neighbor’s dog is the one who attacked you, it does not matter whether they had any knowledge of the dog’s prior behavior or if the dog had ever even bitten anyone in the past. We advise you to get your neighbor’s contact information but not discuss your injuries or the situation any further until you have spoken to a lawyer about your dog injury case.