ZTS

Zoetis Inc.

A maker of medicines, vaccines, and diagnostics for animals, Zoetis sells well-known products like the dog itch-relief drugs Apoquel and Cytopoint and Simparica parasite preventives to veterinarians worldwide. Born in the 1950s as the animal health arm of Pfizer, it became a fully independent company in 2013. Its name comes from the Greek word "zoe," meaning life—a fitting nod to its mission of keeping animals healthy.