Sorry to hear. Animal control isn't required to remove them if not rabid. But the owner is liable for the damage caused by her dogs. Your dad should get needed medical treatment and would be best served by having a lawyer. I hope he and your dog make a good recovery. Feel free to contact me if I can assist.
Sorry to hear about what happened. Your father should be able to make a claim against the dog owner’s homeowner’s insurance for his injuries as well as the medical costs for your dog.
Call a local personal injury attorney ASAP and do not give any recorded statements.
DISCLAIMER: David J. McCormick is licensed to practice law in the State of Wisconsin and this answer is being provided for informational purposes only because the laws of your jurisdiction may differ. This answer based on general legal principles and is not intended for the purpose of providing specific legal advice or opinions. Under no circumstances does this answer constitute the establishment of an attorney-client relationship.