This volume deals with the role and practice of reproductive technology in the breeding of rare and endangered animals in captivity. Calling on both theory and example, the authors highlight three major categories of biotechnology: techniques for managing reproduction (such as in vitro fertilization); techniques for cryopreservation of reproductive material and embryos (the `frozen zoo'); and techniques for genetic analysis. Both practical and ethical issues in
captive breeding are explored here by scientists who are leading workers in the field.