Dogs or cats housed in the same primary enclosure shall be maintained in compatible groups, with the following additional restrictions:
- (A) Females in season (estrus) shall not be housed in the same primary enclosure with males, except for breeding purposes.
- (B) Any dog or cat exhibiting a vicious disposition shall be housed individually in a primary enclosure or in a manner which will not be a threat to other animals. Muzzles shall not be used as a primary method for restraining such animals.
- (C) Puppies or kittens shall not be housed in the same primary enclosure with adult dogs or cats other than their dams, except when permanently maintained in breeding colonies.
- (D) Dogs shall not be housed in the same primary enclosure with cats, nor shall dogs or cats be housed in the same primary enclosure with any other species of animals.
- (E) Dogs or cats under quarantine or treatment for a communicable disease shall be separated from other dogs or cats and other susceptible species of animals in such a manner as to minimize dissemination of such disease.