25 CFR § 11.446 - Cruelty to animals.
A person commits a misdemeanor if he or she purposely or recklessly:
(a) Subjects any animal in his or her custody to cruel neglect; or
(b) Subjects any animal to cruel mistreatment; or
(c) Kills or injures any animal belonging to another without legal privilege or consent of the owner.
(d) Causes one animal to fight with another.