Books in Animal (sorted by popularity)
- Marvels of Pond-life Henry James Slack 139 downloads
- Birds Illustrated by Color Photography, Vol. 3, No. 1 [January, 1898] Various 136 downloads
- Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado Charles L. Douglas 135 downloads
- On Snake-Poison: Its Action and Its Antidote A. Mueller 134 downloads
- Butterflies Worth Knowing Clarence Moores Weed 134 downloads
- Color Key to North American Birds Frank M. Chapman 132 downloads
- A Guide for the Study of Animals Worrallo Whitney, Frederic Colby Lucas, Harold Brough Shinn, and Mabel Elizabeth Smallwood 129 downloads
- The Badger: A Monograph Sir Alfred E. Pease 128 downloads
- Science of Trapping Elmer Harry Kreps 127 downloads
- Delineations of the Ox Tribe: The Natural History of Bulls, Bisons, and Buffaloes. George Vasey 127 downloads
- Ducks and Geese Harry M. Lamon and Rob R. Slocum 126 downloads
- The Ancestry of Modern Amphibia: A Review of the Evidence Theodore H. Eaton 125 downloads
- Profitable Squab Breeding Carl Dare 124 downloads
- The Industries of Animals Frédéric Houssay 120 downloads
- Birds, Illustrated by Color Photography, Vol. 1, No. 6 Various 119 downloads
- The Breeding Birds of Kansas Richard F. Johnston 119 downloads
- Fishes of Chautauqua, Cowley and Elk Counties, Kansas Artie L. Metcalf 118 downloads
- Noteworthy Mammals from Sinaloa, Mexico Ticul Alvarez, J. Knox Jones, and M. Raymond Lee 117 downloads
- Life History of the Kangaroo Rat Charles Taylor Vorhies and Walter P. Taylor 116 downloads
- A Revision of Snakes of the Genus Conophis (Family Colubridae, from Middle America) John Wellman 112 downloads
- The Minds and Manners of Wild Animals: A Book of Personal Observations William T. Hornaday 112 downloads
- A Quantitative Study of the Nocturnal Migration of Birds Jr. George H. Lowery 110 downloads
- On the Origin and Metamorphoses of Insects Sir John Lubbock 108 downloads
- The Forest Habitat of the University of Kansas Natural History Reservation Henry S. Fitch and Ronald L. McGregor 107 downloads
- The Genera of Phyllomedusine Frogs (Anura: Hylidae) William Edward Duellman 106 downloads