I am thinking to write this to them: Hi, I just wanted to let you know that last Monday, while on the walk, my dog was attacked by your dogs. He approached the fence in the corner of your yard apparently to close, and was attacked by one or more of your dogs (it was dark and hard to see). Luckily, they were not able to drag him in through the fence, but caused severe injuries to his front paws and chest. The x-rays didn’t show broken bones, but due to the severity of his injuries, my dog has to be on the antibiotics and pain/anti-inflammatory treatment. He is recovering and we hope there will be no further complications. Your neighbor… Please advise if I need to change or add anything. Should I write about the medical bill? I don't expect them to pay it, but wouldn't object if they offer.