With over 6,000 entries, A Dictionary of Zoology is a detailed and authoritative guide to all areas of the field. It offers full taxonomic coverage of arthropods, other invertebrates, fish, reptiles, amphibians, birds, and mammals. It also includes terms from the areas of ecology, animal behaviour, evolution, earth history, zoogeography, genetics, and physiology.

All entries have been fully revised and updated, making this the most up-to-date reference guide of its kind. There are around 400 entries new to this edition covering areas that include taxonomic groups, prefixes, and widely used descriptive terms. These include articles on micronucleus, stoma, platy-, proto-, and terrestrial.

The dictionary is enriched through its useful web links, accessible via the companion website, as well as diagrams and detailed appendices. This fifth edition also includes a new Common Names appendix and three new illustrations.