This may not directly apply to you NOW; however, with those reading and paying close attention to this Website . . . this will be a future concern!
The National Animal Identification System (NAIS) is posing a bill to require all livestock owners to register their livestock with the governmental agency. Until now, this has not been an issue nor has it been a law.
The risk is simply the cost to raise your own chickens, the pleasure of riding horses anywhere you'd like, or even purchase a pig or beef and/or milk cow from a local farmer.