The owners of licensed dogs and cats, if known, shall be notified in writing not less than two days following impoundment that upon payment of impounding costs such dogs or cats will be returned. If the impounded licensed dogs or cats are not recovered by their owners within 10 days after notice, the dogs or cats shall be disposed of by the Police Chief. Impounded unlicensed dogs and cats may be recovered by the owner, upon proper identification, by payment of the license fee and impounding costs. If such dogs or cats are not claimed within 10 days after impounding, they shall be disposed of by the Police Chief.