Postal Explorer > Publication 52 - Hazardous, Restricted, and Perishable Mail > 4 Restricted Matter > 49 Animal-Fighting Ventures
For the purposes of participating in an animal-fighting venture, the term “animal” refers to any live bird, dog, or other mammal (except human).
The term “animal-fighting accessory” refers to a knife, gaff, or other sharp instrument attached to or designated or intended to be attached to the leg of a bird in an animal-fighting venture.
Animal-fighting matter refers to written, printed, or graphic matter (e.g., advertisements or other commercial speech) promoting or furthering an animal-fighting venture.