Scientists have been researching ways to generate food that has similar qualities to the food animals receive in nature. Despite attempts to improve nutrients, animals expect food to come to them; they are not hunting. In their native habitats, the animals searched for their food source on a daily basis. In these containment centers, animal trainers feed the animals based on positive reinforcement, which devalues ​​their hunting skills (“Wild vs. Captivity”). As a result, responding only to positive reinforcement only causes animals to miss out on a large amount of daily exercise and increases stress. Furthermore, thanks to the research and improvement of meals by nutritionists and animal guardians, the standardization of their organization was created. The Institute of the Association of Zoos and Aquariums, known for short as AZA, has assembled guidelines that designate directions for the institute for conservation feeding programs. These feeding instructions include: preparing a nutritional diet to be consumed frequently, requiring a diet that represents the natural food cycle, and that the diet is economical to feed (“AZA Nutrition”). AZA nutritional guidelines may be in effect; however, most zoos and aquariums are not taking further steps toward change