AN INTRODUCTION TO THE PRIMATES, covers 41 species of primates ranging from the 300 gram sized pygmy slow loris to the 200 kilogram sized gorilla. At least ten of these are extremely endangered species, including the Zanzibar red colobus, (filmed in Zanzibar) and the potto, aye-aye, and Drill, all of which occur in less than half a dozen sites in captivity. The tarsier is represented although unfortunately no video is available. The animals are organized by taxonomic category, although formal terms are not used. Instead, they are grouped by their shared features, in an effort to provide visual manifestations of such features as the tapetum (the reflective layer in the eye of nocturnal prosimians), sexual dimorphism, grooming claws, and dental combs.
Most of the animals are recorded in their social groups and some, such as the Indri and Sifaka, in their natural habitats in Madagascar. Members of the lemurs and lorises, the tarsier, the five major types of the expanded New World Monkey taxonomy, and both Cercopithecines and Colobines are covered as well as two lesser and four great ape species. This rapid coverage of a range of species in under 50 minutes provides an excellent introduction to the order, covering both morphology and behaviour.