### Question
What does major species mean?


### Answer
**Major species** has the following meaning in *21 U.S.C. § 321*:

> cattle, horses, swine, chickens, turkeys, dogs, and cats, except that the Secretary may add species to this definition by regulation

#### Citation:
  - *21 U.S.C. § 321*
  - Heading: **CHAPTER 9-FEDERAL FOOD, DRUG, AND COSMETIC ACT > SUBCHAPTER II-DEFINITIONS**

