It is better for every medical practitioner who uses controlled substances, including veterinarians, to have his or her own DEA registration as using a common one has the potential to run afoul with the DEA. Drugs that have a potential for addiction or abuse are classified as controlled substances. The Controlled Substances Act regulates the Schedule I to V drugs which includes medical formulations that are used for pets as well. Therefore, veterinarians also need a veterinary DEA license to be able to prescribe, administer or dispense the scheduled drugs. This entails additional responsibility to abide by the regulations related to storing, tracking and recording all controlled substances used by the practice as specified by the federal Drug Enforcement Agency. In fact, veterinary practices often use one DEA registration number to order controlled substances for all veterinarians in the practice. According to state and federal regulations, all the veterinarians in a practice a...