D.C. Mun. Regs. tit. 24, § 905
905.1 No person shall keep or display any captured wild animal (such as a bear, monkey, fox, or reptile) on any public space under the supervision of the Mayor, without first obtaining a permit to do so.
905.2 Any person desiring to keep or display any wild animal shall make application to the Mayor or the Mayor's designated agent on a form to be provided for that purpose, stating the place of the proposed display and the duration of the display.
SOURCE: Article 18, §13 of the Police Regulations (May 1981).