Which of the following is an example of a USDA-regulated veterinary biologic?

• A. Vaccines
• B. Antibiotics
• C. Houseplants
• D. Fertilizers

Answer: (A)

Vaccines are veterinary biologics—products made from living organisms used to prevent disease in animals. In the United States, these biologics are regulated by USDA APHIS through the Center for Veterinary Biologics, which licenses their production, ensures quality control, and requires proper labeling for animal use. This strong regulatory framework is what defines them as USDA-regulated veterinary biologics.

Antibiotics, while also used in animals, are regulated as veterinary drugs by the FDA (Center for Veterinary Medicine), not as USDA-regulated biologics. Houseplants and fertilizers are not veterinary biologics at all; they are agricultural inputs or consumer products and fall outside the veterinary biologics regulatory path.