My question involves an injury that occurred in the state of: Texas. While at a dog park, our dog and another dog got in a fight. The other dog received wounds to its hind leg and ours was injured on her face and back. While trying to separate the dogs, the owner of the other dog was bit. After the dogs were separated, I sent the owner our dog's rabies vaccination records. We received a call from the police department and they said animal control would be in contact with us but never heard anything from them. Today (a month later) we received a letter from the owners of the other dog demanding $507 for emergency vet fees. Are we responsible for these fees?