The experience it takes to create a holistic food such as this can only happen by a dog person who understands the behavior of dogs and has been in the dog training, breeding and nutrition business for decades. Wendy Volhard, founder of VDN, has spent the last 40 years developing the best quality pet nutrition products on the market. Natural Diet Foundation (NDF) was the first dehydrated dog food on the market and is based on Wendy Volhard’s Natural Diet recipe developed in 1972 and clinically tested for over 40 years. Accept nothing less!