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Meet the Exclusive® Pet Food Team

Michael Hayek Ph.D.


University of Kentucky


Michael has had a long interest in science and animals and has been able to combine these topics with his nutrition research. Michael has been involved with research projects in multiple species, however his greatest passion is studying how nutrition interacts with the health of dogs and cats.

After receiving a bachelor’s degree in biology from Villanova University, Michael earned a master’s degree in Animal Science and a Ph.D. in Multidisciplinary Nutritional Science from the University of Kentucky. Michael’s career interests led him to a post-doctoral research program at the USDA Human Nutrition Center of Aging at Tufts University. He then joined The Iams Company as a Research Nutritionist and spent over 20 years in the pet food industry prior to joining the Exclusive® Pet Food team in 2017. Michael has authored multiple scientific publications on dog and cat nutrition.

Kemba Marshall, DVM, DABVP


University of Florida College of Veterinary Medicine


Dr. Kemba Marshall would tell you that the "how" is just as important as the "what". Maybe that's on the advice of her parents who told her to go explore outside after she announced at eight her plan to become a veterinarian. Kemba received a Bachelor’s degree in Biology from Howard University in Washington DC and received her veterinary degree from the University of Florida. At the University of Tennessee College of Veterinary medicine Kemba completed an exotic animal medicine residency and is a Boarded Diplomate of the American Board of Veterinary Practitioners.

As Director of Veterinary Services Kemba and her team oversee the general animal health of the Nutrition Center. That means lots of "how" conversations about vaccines, flea and tick control and the amount of shade cloth needed to keep animals cool. That also means lots of "what" conversation about the number of brushes needed for cows and the preferred environmental temperature for ducklings.

Dr. Kemba has worked in zoo, laboratory, Corporate and private animal practices. She has used journal articles and book chapters to document study findings. In her opinion the best veterinarians are strong observers. That means when she can she's out looking to see who's eating, who's drinking, who's playing and who is ruminating in the sun. In short, she does now what her parents told her to do as a child and that is to go out and explore.

Michael Schlegel, Ph.D., PAS, Dipl. ACAS-Nutrition


Michigan State University


Michael likes challenges and unexpected answers. He’s a scientist, researcher and artist of nutrition and diet formulation. For Michael, every question is a mini research project. Solving everyday challenges animals face is what Michael is all about.

After receiving a bachelor’s degree in animal production from The Pennsylvania State University, Michael earned a master’s degree and Ph.D. in animal nutrition from Michigan State University. Michael’s career is expansive. He completed a joint post-doctoral research program with the University of Florida’s Department of Animal Science and Disney’s Animal Kingdom Animal Programs in exotic animal nutrition, taught animal science as an assistant professor at Delaware Valley University and served ten-years as the Director of Nutritional Services at San Diego Zoo Global. Dr. Schlegel has experience formulating diets for both wild and domestic felids and canids. Michael and his wife are pet parents to a rescued cat and dog. Dr. Schlegel joined Exclusive® Pet Food Team in 2015.