A kitten's growth can be segmented into two distinct stages, with very different nutritional requirements. From 4 months until maturity, a kitten's growth rate actually slows and energy requirements are different. At the same time, it is increasingly important to provide the right nutrient balance for optimal development. DHA, coming from fish oils, plays a major role in embryonic and fetal development and growth of the central nervous and visual systems. Early dietary supplementation is necessary to achieve a positive effect on cerebral development. Carefully selected ingredients, like rice, are easy to digest for young kittens. Good digestion is important for optimal nutrient absorption, during this second stage of growth. A kittens milk teeth will begin to appear between 3 and 4 weeks of age, but permanent teeth do not emerge until after 4 months of age. A tiny kibble is easier to eat and can be rehydrated during weaning. Accumulation of plaque and tartar is a risk even at this early stage of life. Kitten 36 contains nutrients that help to bind and safely remove the calcium that could build-up on teeth, while still providing the necessary calcium levels for optimal skeletal growth. Available in 15 lbs.