2018 World Prescription Dog Food Market – Mars Petcare, Nestle Purina, Hill’s Pet Nutrition (Colgate-Palmolive … September 21, 2018 ©Img. Africa_Studio/Shutterstock.com Nutrition 2018 World Prescription Dog Food Market – Mars Petcare, Nestle Purina, Hill’s Pet Nutrition (Colgate-Palmolive … You can read the whole article here.