Any person having knowledge of the existence of any animal known to have been or suspected of being exposed to rabies or having knowledge of an animal bite or scratch to an individual that the person could reasonably foresee as capable of transmitting rabies must immediately report such knowledge or incident to the animal control officer, county health department, or any police officer, and in no case longer than twenty-four (24) hours from the time of the incident.
(1996 Code of Ordinances, Chapter 2, Article 10.00, Section 10.01)
The animal control officer, county health department or any police officer shall have the authority to order the quarantine of animals responsible for bite incidents or suspected of having any zoonotic disease considered to be a hazard to human population or other animals.
(1996 Code of Ordinances, Chapter 2, Article 10.00, Section 10.02)
(a) 
When a dog or cat, which has bitten or scratched a human or attacks another animal, has been identified, the owner will be required to produce the animal for ten (10) days confinement to determine whether such dog or cat has been exposed to rabies. Any unclaimed animal may be destroyed for rabies diagnosis prior to the end of this observation period. The dog or cat may be released from quarantine if a veterinarian determines that the animal does not show the clinical signs of rabies, provided the owner has paid all reasonable cost associated with the quarantining. Refusal to produce such animal is a misdemeanor and each day of such refusal constitutes a separate and individual violation.
(b) 
No animal which has a high probability of transmitting rabies, including skunks, bats, foxes and raccoons, will be placed in quarantine for observation. All such animals involved in biting incidents will be humanely killed in such a manner that the brain is not mutilated. The brain shall be submitted to a laboratory certified by the Texas Department of Health for rabies diagnosis.
(c) 
The Grayson County Health Authority may require an animal which has inflicted multiple bite wounds, punctures, or lacerations to the face, head, or neck of a person to be humanely killed and the brain tested for rabies.
(1996 Code of Ordinances, Chapter 2, Article 10.00, Section 10.03)
(a) 
Domestic Animals.
Vaccinated animals which have been bitten or otherwise significantly exposed to a rabid animal should be humanely destroyed or if sufficient justification for preserving the animal exists, the exposed vaccinated animal should be immediately given a booster rabies vaccination and placed in strict isolation for forty-five (45) days. Unvaccinated animals shall be immediately given a rabies vaccination and placed in strict isolation for ninety (90) days and given booster vaccinations during the third (3rd) and eighth (8th) weeks of isolation. If the unvaccinated animal is under three (3) months of age at the time of the second vaccination, an additional booster should be given when the animal reaches three (3) months of age.
If a veterinarian determines that a quarantined animal does not show the clinical signs of rabies, it may be released to the owner prior to or upon expiration of the quarantine period, provided the owner has paid all of the reasonable costs of such quarantine and any veterinarian bills. However, if the quarantined animal shows the clinical sign of the disease of rabies, the animal shall be humanely destroyed and its head or brain submitted to the nearest laboratory certified by the Texas Department of Health for rabies diagnosis for testing.
(b) 
Wild or Exotic Animals.
No wild or exotic animal will be placed in quarantine. All wild or exotic animals will be humanely destroyed in such a manner that the brain is not mutilated. The brain will then be submitted to a laboratory certified for rabies diagnosis in order to be tested.
(c) 
Quarantining Facilities.
Any animal to be placed in quarantine must be placed in an animal control facility approved by the Texas Department of Health as directed by the Grayson County Health Department. However, the owner of the animal may request permission for home quarantine if the following criteria can be met:
(1) 
Secure facilities must be available at the home of the animal owner and must be approved by a licensed veterinarian.
(2) 
The animal is currently vaccinated against rabies.
(3) 
A licensed veterinarian must observe the animal at least on the first and last days of the quarantine period. If the animal becomes ill during the observation period, the city and the veterinarian must be notified by the person having possession of the animal. At the end of the observation period the release from quarantine must be provided in writing by the attending veterinarian and approved by the city.
(4) 
The animal was not a stray at the time of the bite incident.
(d) 
If the biting animal cannot be maintained in secure quarantine, it shall be humanely destroyed and the brain submitted to a laboratory certified by the Texas Department of Health for rabies diagnosis.
(1996 Code of Ordinances, Chapter 2, Article 10.00, Section 10.04)