Walker's Mammals of the World
Abstract
From aardwolves and bandicoots to yapoks and zorillas, Ernest P. Walker's Mammals of the World is the most comprehensive-the pre-eminent-reference work on mammals. Now, completely revised and updated, this fascinating guide is better than ever. Providing complete account of every genus of mammal in all historical time, the sixth edition is 25 percent longer than its predecessor. Of the previous generic accounts, 95 percent have been substantively modified, and there are 80 new ones-among them, three remarkable, large ungulates recently discovered in the forests of Indochina. New also is full account of the woolly mammoth, now known to have survived until less than 4,000 years ago. Each section of the book describes one genus and includes facts such as scientific and common names, the number and distribution of species, measurements and physical traits, habitat, locomotion, daily and seasonal activity, population dynamics, home range, social life, reproduction, and longevity. Textual summaries present accurate, well-documented descriptions of the physical characteristics and living habits of mammals in every part of the world. As in the last two editions, the names and distributions of every species of every genus are listed in systematic order. These lists have now been cross-checked to ensure coverage of all species in the comprehensive new Smithsonian guide, Mammal Species of the World. Facts on the biology of mammals have been brought together from more than 2,700 newly cited references, nearly all published in the last decade. Also new are the latest data on reproduction, longevity, fur harvests, numbers in the wild and in captivity, and conservation status. The sixth edition also records all official classifications of every mammal species and subspecies in the massive 1996 IUCN Red List of Threatened Animals. The illustrations-more than 1,700-include virtually every genus of mammal. Among them are pictures by such noted wildlife photographers as Leonard Lee Rue III, Bernhard Grzimek, David Pye, and Warren T. Houck. Mammals pictured here for the first time include the just-discovered giant muntjac deer of Viet Nam, rodent known only from the Solomon Islands, large fruit bat whose male suckles the young, and an extremely rare web-footed tenrec of Madagascar. Since its publication in 1964, Walker's Mammals of the World has become favorite guide to the natural world for general readers as well as an invaluable resource for professionals. This sixth edition represents more than half century of scholarship-Ernest P. Walker himself devoted more than thirty years to the original project-and remains true to Walker's vision, smoothly combining thorough scholarship with popular, readable style to preserve and enhance what the Washington Post called a landmark of zoological literature.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Large herbivores (Artiodactyla, Perissodactyla, Proboscidea) represent only 5% of Mammalia but comprise 28-39% of the data in seminal BMR scaling analyses.
“Whereas these groups (henceforth referred to as 'large herbivores') represent only 5% of Mammalia (Nowak, 1999), they comprise 28-39% of the data in these seminal analyses (Table •1).”
From Allometric scaling of mammalian metabolism (2005) · cites this paper as Nowak, 1999
Several textbooks and gray literature sources from zoological institutions in Europe and the United States give body mass as 160-350 kg and body length of adults as 150-170 cm for C. liberiensis.
“however, several textbooks and gray literature sources from zoological institutions in Europe and the United States (Crandall 1964;Boever 1978;Laws 1984;Taylor and Greenwood 1986;Jarofke 1993;Eulenberger 1995;Nowak 1999;Thompson 2002;Miller 2003Miller , 2007;;Miller et al. 2014;Walzer and Stalder 2014) give body mass as 160-350 kg and body length of adults as 150-170 cm.”
From Choeropsis liberiensis (Artiodactyla: Hippopotamidae) (2019) · cites this paper as Nowak 1999
Birth weights of C. liberiensis range from 3 to 8 kg with a mean of 5.7 kg.
“Birth weights range from 3 to 8 kg with a mean of 5.7 kg (Steinmetz 1937;Roth 1962;Nowak 1999;Stroman and Slaughter 1972;Lang 1975;Leutenegger 1978;Greed 1983).”
From Choeropsis liberiensis (Artiodactyla: Hippopotamidae) (2019) · cites this paper as Nowak 1999
Cited by
Sorted by citations
Allometric scaling of mammalian metabolism
White, C. R., & Seymour, R. S. (2005) · Journal of Experimental Biology · doi:10.1242/jeb.01501 · Cited by 433 · see citing works
Evolution of weaponry in female bovids
Stankowich, T., & Caro, T. (2009) · Proceedings of the Royal Society B: Biological Sciences · doi:10.1098/rspb.2009.1256 · Cited by 108 · see citing works
Mammalian intestinal allometry, phylogeny, trophic level and climate
Duque-Correa, M. J., Codron, D., Meloro, C., McGrosky, A., Schiffmann, C., Edwards, M. S., & Clauss, M. (2021) · Proceedings of the Royal Society B: Biological Sciences · doi:10.1098/rspb.2020.2888 · Cited by 40 · see citing works
Burgin, C. J., Zijlstra, J. S., Becker, M. A., Handika, H., Alston, J. M., Widness, J., Liphardt, S., Huckaby, D. G., & Upham, N. S. (2025) · Journal of Mammalogy · doi:10.1093/jmammal/gyaf047 · Cited by 28 · see citing works
Choeropsis liberiensis (Artiodactyla: Hippopotamidae)
Flacke, G. L., & Decher, J. (2019) · Mammalian Species · doi:10.1093/mspecies/sez017 · Cited by 9 · see citing works
Treeshrews (Scandentia): an integrative review of taxonomy, ecology, evolution, and conservation
Togattiwar, A. S., Veeradharsan, A., & Kamalakannan, M. (2026) · Frontiers in Ecology and Evolution · doi:10.3389/fevo.2026.1799888
- Authors
- Nowak, R.
- Corresponding author
- Nowak, Ronald
- ORCID
- Nowak, Ronald
- Venue
- Johns Hopkins University Press eBooks
- Publisher
- Johns Hopkins University Press
- Published
- 1999
- OpenAlex
- W1579928530
- Cited by
- 4,102
- References
- 0
- Citations by year
- 2026: 50 · 2025: 72 · 2024: 81 · 2023: 63 · 2022: 65 · 2021: 120 · 2020: 117 · 2019: 103 · 2018: 100 · 2017: 95 · 2016: 131 · 2015: 140 · 2014: 167 · 2013: 165 · 2012: 192
- FWCI
- 81.34
- Type
- book
- Language
- en
- Open access
- closed
- Locations
- Johns Hopkins University Press eBooks (publishedVersion)
- Andalas University Repository (Andalas University) (submittedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
- Physical Sciences › Environmental Science › Ecology › Wildlife Ecology and Conservation
- Health Sciences › Medicine › Urology › Comparative Animal Anatomy Studies
- Keywords
- mammals, mammal taxonomy, mammal biology, mammal species account, mammal distribution, mammal conservation status, IUCN Red List, woolly mammoth, Pteropodidae, social behavior, home range, population dynamics
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review