- Automatic Pet feeders
- Home cooking and vitamin supplements
- PerfectPaws.com
- Brake-Fast Pet bowl
- Royal Canin Diets
- Association for Pet Obesity Prevention
- Dog Food Advisor- ratings
- Cat Nutrition
- Pet Nutrition Alliance: Nutritional Calculator
-
Balance IT®
- Cat Food Chart
- Petfoodology
- Tufts Clinical Nutrition Service
- Cornell University Nutrition