Hello everyone yesterday my dog attacked our neighbors dog, my dog has never had any aggressive behavior this was not the first time he saw the neighbors dog since we moved to this neighborhood so I don’t understand why she reacted the way she did, my husband had a little accident on his left wrist on Friday so while he was walking our dog I guess the leash slipped out of his hand and he couldn’t pulled it hard enough to stop our dog so he went straight to the neighbors dog, who was also walking her dog, my husband tried to separate them and did after 6 or 7 seconds everything happened so quick that all he could do was checked the neighbors dog to see if he was bleeding or something but he wasn’t, there were no wounds, the Owner of the dog told my husband she was fine but she was scared so she left quickly. That same day her husband was at our front door asking for our names and phone number, he told my husband his wife and the dog were fine that there were no wounds or anything and that he was not gonna call the police because nothing happened and they love dogs so he understood that was an accident. This morning he called my husband again asking if our dog had her rabies shot and obviously s he does, the problem is that we just recently moved and I can’t find the rabies vaccination certificate anywhere, we took her last year to one of those places that does it for cheaper at the outside of pet stores Or groceries store. What should I do now? She says she needs proof and I understand her I totally do but I’m not lying. And she also called my husband saying that she was also attacked by our dog while trying to cover up her dog and she wants to call AC for them to take my dog to have it in quarentine but I’m pretty sure they will put my dog down because she is a bull terrier and they are identified as aggressive animals and I don’t want that to happen. Please give me some advice, Thanks in advance