Can I include my pet in a prenuptial agreement? You will have to file suit against him and prove ownership.You will need to claim that his purchase of the dog was either for you or for the both of you. C. You must show proof of residency in Palm Beach County. D. You must show proof of ownership of the pet. In a Florida divorce, your pet is considered personal property that is subject to equitable distribution in a divorce action. You sold your dog with no contract, so you have no right to "repossess" the dog. Step One: Download and fill out the adoption application. What does a pet agreement include? They do if they specify certain rights or requirements in the sales contract.