What does “Life Staging” mean – in regard to its use in animal diets? It means that the diet is separated into sperate “stages” or “levels”. These dietary stages then address the specific nutritional requirements of the animal at each stage of its life cycle. The most common example of this “staging” is in dog and cat foods, where you have specific diets for puppy’s and kittens, adult dogs and cats, and older seniors. All different formulas specifically designed for each life stage of the animal. The best example of life-staging in Turtle diets is TropicZone’s 5 stage Aquatic Turtle diets, providing exact nutrition for hatchlings, baby’s, juveniles, sub-adult, and adult turtles at every stage of their lives.