What is the largest veterinary company?

The largest veterinary company is Zoetis, a global animal health manufacturer specializing in products and services that support the prevention, diagnosis, and treatment of diseases in animals. As the largest company in the veterinary pharmaceutical sector, Zoetis serves veterinarians, livestock producers, pet owners, and animal health professionals across more than 100 countries.

Zoetis operates across the full animal health value chain, including research and development, clinical testing, regulatory approval, manufacturing, quality management, and global distribution. Its portfolio includes veterinary pharmaceuticals, vaccines, diagnostic products, parasiticides, dermatology treatments, pain management therapies, and genetic testing services. The company supports a broad range of species, including cattle, poultry, swine, sheep, horses, dogs, and cats.

The veterinary industry is a critical segment of the broader life sciences and healthcare manufacturing ecosystem. Animal health companies contribute to food safety, livestock productivity, disease prevention, animal welfare, and public health initiatives. Innovations from leading veterinary manufacturers help reduce disease burden, improve herd health management, and support sustainable agricultural production while advancing companion animal care.

In regulated environments, veterinary manufacturers operate under oversight from agencies such as the U.S. Food and Drug Administration Center for Veterinary Medicine (FDA CVM), the European Medicines Agency (EMA), and other national regulatory authorities. Compliance with Good Manufacturing Practice (GMP), quality assurance (QA), quality control (QC), pharmacovigilance, and product safety requirements is essential. Companies such as Zoetis also collaborate with Contract Development and Manufacturing Organizations (CDMOs), research institutions, and supply chain partners to support innovation, manufacturing scalability, and global product availability.