Jenkins, Marie M.

Describes the physical characteristics, habits, natural environment, and relationship to humans of goats, sheep, and their relatives.

Examines different types of reproduction in animals, traces the development of various animal embryos, and discusses the effects of drugs, radiation, and other factors on an embryo.

Introduces the large array of animals belonging to the deer family, including the elk, sika, moose, reindeer, and caribou.

Discusses the physical characteristics and habits of various members of the mollusk family whose more than 100,000 species include sea slugs, pearl oysters, and squids.

Examines in general the history and characteristics of marsupials, and discusses specifically the habits and characteristics of opossums, kangaroos, and other similar animals. Includes a section on monotremes.