Some observations on growth and development of Macaca mulatta.

Introduction T h e normal diet and growth patterns of most animals are so far removed from man as to make extrapolation of data across species boundaries a difficult, if not impossible, exercise. T h e phylogenetic argument that subhuman primates are evolutionarily nearer man does not necessarily mean that they are the most useful as animal models. T h e nutritional requirements of laboratory monkeys have recently been reviewed