Books in Animal (sorted by popularity)
- The Genera of Phyllomedusine Frogs (Anura: Hylidae) William Edward Duellman 58 downloads
- Ecological Observations on the Woodrat, Neotoma floridana Dennis G. Rainey and Henry S. Fitch 57 downloads
- Territory in Bird Life Henry Eliot Howard 57 downloads
- History of Beasts Unknown 57 downloads
- Aspects of Reproduction and Development in the Prairie Vole (Microtus ochrogaster) Henry S. Fitch 57 downloads
- A New Subspecies of Wood Rat (Neotoma mexicana) from Colorado Robert B. Finley 56 downloads
- A New Order of Fishlike Amphibia From the Pennsylvanian of Kansas Theodore H. Eaton and Peggy Lou Stewart 56 downloads
- A Check-List of the Birds of Idaho M. Dale Arvey 56 downloads
- Systematic Status of the Colubrid Snake, Leptodeira discolor Günther William Edward Duellman 56 downloads
- The Baculum in the Chipmunks of Western North America John A. White 55 downloads
- Comments on the Taxonomic Status of Apodemus peninsulae, with Description of a New Subspecies from North China J. Knox Jones 55 downloads
- Distribution of Some Nebraskan Mammals J. Knox Jones 55 downloads
- A Review of the Frogs of the Hyla bistincta Group William Edward Duellman 55 downloads
- Natural History of the Brush Mouse (Peromyscus boylii) in Kansas With Description of a New Subspecies Charles Alan Long 55 downloads
- Speciation and Evolution of the Pygmy Mice, Genus Baiomys Robert L. Packard 55 downloads
- Pleistocene Bats from San Josecito Cave, Nuevo Leon, Mexico J. Knox Jones 55 downloads
- Wild Birds in City Parks Herbert Eugene Walter and Alice Hall Walter 54 downloads
- A New Bat (Genus Pipistrellus) from Northeastern Mexico Rollin H. Baker 53 downloads
- Check-list of the Birds of Kansas Harrison Bruce Tordoff 53 downloads
- Freshwater Sponges, Hydroids & Polyzoa Nelson Annandale 52 downloads
- Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae Marion Anne Jenkinson 52 downloads
- A Quantitative Study of the Nocturnal Migration of Birds Jr. George H. Lowery 52 downloads
- Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz John M. Legler 52 downloads
- The Subspecies of the Mexican Red-Bellied Squirrel, Sciurus aureogaster Keith R. Kelson 52 downloads
- A New Piñon Mouse (Peromyscus truei) from Durango, Mexico Robert B. Finley 52 downloads