Francis Marion Pottenger Jr. (May 29, 1901 – January 4, 1967) was an American physician and raw food diet advocate. He was best known for his cat study that sparked interest in a diet high in raw animal products including uncooked meats and unpasteurized dairy. Pottenger was a disciple of Canadian dentist and diet food advocate Weston A. Price. The Price-Pottenger Nutrition Foundation is named after Price and Pottenger. Biography Pottenger was born Francis Marion Pottenger Jr. in Monrovia, California, on May 29, 1901. He was the son of Francis M. Pottenger Sr., the physician who co-founded the Pottenger Sanatorium and Clinic for Diseases of the Chest for treatment of tuberculosis in Monrovia, California. Pottenger was educated at Otterbein University. He married Elizabeth Saxour on June 17, 1925. They had four children. In 1930, Pottenger obtained his M.D. from the University of Cincinnati College of Medicine. He completed his residency at Los Angeles County Hospital in 1930 and became a full-time assistant at the sanatorium. From 1932 to 1942, he also conducted what became known as the Pottenger Cat Study. In 1940, he bought some of the cottages from the Monrovia sanatorium and founded the Francis M Pottenger Jr. Hospital. Until closing in 1960, the 42-bed hospital specialized in treating non-tubercular diseases of the lung, especially asthma. At his hospital, he served liberal amounts of liver, butter, cream and eggs to convalescing patients. Pottenger's cats Pottenger used donated laboratory cats to test the potency of the adrenal extract hormones he was making. The adrenal glands of these cats were removed for the experiments. He was feeding the cats a diet consisting of raw milk, cod liver oil and cooked meat scraps. When the number of donated cats exceeded the supply of food available, Pottenger began ordering raw meat scraps from a local meat packing plant, including organs, meat, and bone; and fed a separate group of cats from this supply. Within months this separate group appeared in better health than the cooked meat group. Their kittens were more energetic and their post-operative death rate was lower. The results interested Pottenger and he decided to conduct a series of feeding experiments. The experiments involved approximately 900 cats over a period of 10 years, with four generations of cats being studied. Pottenger kept records for 600 cats, but 300 were not recorded. One group of cats was fed a diet of two-thirds