(a) A person shall, not later than the 15th day after learning that he is the owner of an aggressive dog:
(1) have an unsterilized aggressive dog spayed or neutered;
(2) register the aggressive dog with the director and pay to the director an aggressive dog fee of $201;
(3) restrain the aggressive dog at all times on a leash in the immediate control of a person or in a secure enclosure;
(4) when taken outside the secure enclosure, securely muzzle the dog in a manner that will not cause injury to the dog nor interfere with its vision or respiration. The muzzle must prevent the aggressive dog from biting any person or animal;
(5) obtain liability insurance coverage or show financial responsibility in an amount of at least $100,000 to cover damages resulting from an attack by the aggressive dog causing bodily injury to a person or another animal and provide proof of the required liability insurance coverage or financial responsibility to the director;
(6) place and maintain on the aggressive dog a collar or harness with a current aggressive dog registration tag securely attached to it;
(7) have the aggressive dog injected with a microchip implant and registered with a national registry for dogs;
(8) post a legible sign at each entrance to the enclosure in which the aggressive dog is confined stating "BEWARE AGGRESSIVE DOG." The aforementioned sign must be purchased from Dallas Animal Services.
(b) The owner of the aggressive dog shall renew the registration of the aggressive dog with the director annually and pay an annual aggressive dog registration fee of $50.