About us

Our customers have always known that they can depend on MSD Animal Health for more than just medicines. They count on MSD Animal Health for information, technologies and veterinary services that truly advance animal healthcare. It is our heritage and our mission.

The Science of Healthier Animals

Today, our science supports the precious bond between people and their pets. It also helps protect international public health, ensure food safety and increase protein supplies.

Our core values

Today, our science supports the precious bond between people and their pets. It also helps protect international public health, ensure food safety and increase protein supplies.


Appreciating the fundamental role of progressive science in animal health, understanding the deep responsibility MSD Animal Health has to our customers, consumers, animals, society and the planet.


Being original in thought and approach, having the confidence and determination to come up and work with new insights, greater understanding and fresh knowledge.


Working closely, sharing understanding and inspiring one another and customers, allowing science and thinking to flourish, enabling the right balance of cost against human capability.


Aiming at being efficient, fast and flexible in all operations, responding rapidly to new opportunities and demands, an outward orientated performance culture that values talent and action.

Our People

Bringing our purpose to life.

I use our company’s products at home as a producer. I see firsthand all the research and work that goes into creating our products, but on the farm I also see how quickly, reproducibly, and holistically our products work. Our work isn’t about ‘one product, one shot, one time’, it’s about really providing a program for animal health.

Susie Knetter, Senior Scientist, U.S. Research & Development

To be able to take some of the pressure off of producers and for them to know that we have eyes on their animals when they can’t be there, I find that really rewarding.

Amanda Doughty, PhD, User Proficiency Manager, Asia-Pacific Region, Allflex Livestock Intelligence

“In meeting our customers’ needs, we are looking at alternatives that are really going to set us apart, and with that I see a bright future for our company.”

Devon White, Associate Director for the U.S. Companion Animal Sales Team for the Gulf Coast Region

I Am Animal Health is a series of stories about our people

A Legacy of Innovation

MSD Animal Health has a rich heritage of scientific excellence and innovation. It is the foundation of our future and the inspiration for our daily work.


MSD establishes an animal health division and discovers sulfaquinoxaline, the first poultry coccidiostat.


Feed manufacturer Wim Hendrix lays the foundation for Intervet in Boxmeer (The Netherlands), where the Animal health headquarters of todays’ company remained until 2012.


Schering-Plough Animal Health is established and comes to market with prednisone to treat ketosis in dairy cattle.

Intervet develops first fowl pox vaccine for poultry


Publication of first edition of The MSD Veterinary Manual.


Netherlands based “Koninklijke Zwanenburg Organon” (which later became AKZO NOBEL) acquires Intervet.


Introduction of anti-inflammatory drug for horses (Schering-Plough Animal Health).

Launch of products for reproduction management in farm animals (Intervet). Development of anthelmintic fenbendazole (Intervet).


Development of first recombinant DNA vaccine (PORCILIS® Porcoli against diarrhea in piglets) by Intervet.


Development of florfenicol, a novel phenicol antibiotics exclusive to animal health (Schering-Plough Animal Health).

Introduction of antiparasitic SCALIBOR® a dog collar to prevent Leishmaniasis from sand fly bites (Intervet)


MSD and French pharmaceutical company Rhone-Merieux (later Sanofi) combine their animal health divisions in an equally-owned joint venture named Merial.


Launch of SLICE® fish antiparasitic for the treatment of seas lice in salmon (Schering-Plough Animal Health).

Licensure of the first live bacterial recombinant vaccine against strangles in horses in the EU (Intervet).

Introduction of PORCILIS® Pesti, the first marker vaccine for classical swine fever (Intervet)


Harrisvaccines was founded in Iowa


Schering-Plough acquires Organon Biosciences (Intervet and Organon) from AKZO NOBEL. The animal health division operates as Intervet/Schering-Plough Animal Health.


Development of Sphereon, freeze-drying technology for vaccines (Intervet/Schering-Plough Animal Health).

Merck & Co., Inc., Kenilworth, NJ, USA acquires Schering-Plough. Intervet/Schering-Plough Animal Health becomes the animal health division of MSD.


The operating name of the animal health unit changes to MSD Animal Health


MSD Animal Health receives FDA approval of BRAVECTO™, the first chewable tablet for dogs for up to 12 weeks of treatment and prevention of fleas and ticks.

MSD Animal Health receives approval of PORCILIS® PCV M Hyo vaccine, Europe’s first single-shot vaccine to protect piglets from Porcine Circovirus Type 2 and Mycoplasma hyopneumoniae infections


MSD Animal Health receives a conditional product license for the Canine Influenza Vaccine H3N2 and becomes the first company to make the vaccine available to the market.

MSD Animal Health acquires Harrisvaccines, a privately-held company that develops, manufactures and sells vaccines for food production and companion animals


MSD Animal Health receives marketing approval from European Medicines Agency and U.S. Food and Drug Administration’s approval of BRAVECTO® for both cats and dogs, up to 12 weeks of treatment and prevention of fleas and ticks.

MSD Animal Health receives approval for conditional product license for CIV H3N2 vaccine to protect dogs against the newly identified strain of CIV

Our Operations

We operate in more than 150 countries.

We’ve achieved our reach through an absolute commitment to regional understanding. It helps us react quickly to changing disease landscapes around the world. We help protect public health and effectively address local concerns.

Featured Stories

Explore our archive of featured stories and learn more about how MSD Animal Health protects the health of animals.