University of Missouri-Kansas City biology professor Karen Bame was shocked when she found out her beloved black cat, Rachel, was diabetic. Common cat food high in carbohydrates may be to blame. Her veterinarian told her that unlike humans, domestic cats are strictly carnivores, so a diet high in protein actually aides against the onset of diabetes. There is also the factor of a more sedentary lifestyle enjoyed by most house cats today. Read about it here.