9 C.F.R. § 3.58 Classification and separation.
Title 9 - Animals and Animal Products
Animals housed in the same primary enclosure shall be maintained in compatible groups, with the following additional restrictions: (a) Rabbits shall not be housed in the same primary enclosure with any other species of animals unless required for scientific reasons. (b) Rabbits under quarantine or treatment for a communicable disease shall be separated from other rabbits and other susceptible species of animals in such a manner as to minimize dissemination of such disease.
Title 9: Animals and Animal Products
PART 3—STANDARDS
Subpart C—Specifications for the Humane Handling, Care, Treatment and Transportation of Rabbits
Animal Health and Husbandry Standards
§ 3.58 Classification and separation.