Books in Animal (sorted by popularity)
- Birds, Illustrated by Color Photography, Vol. 2, No. 3 Various 124 downloads
- Bee Hunting: A Book of Valuable Information for Bee Hunters John Ready Lockard 123 downloads
- Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz John M. Legler 122 downloads
- An Australian Bird Book: A Pocket Book for Field Use John Albert Leach 121 downloads
- Mammals of Northwestern South Dakota J. Knox Jones and Kenneth W. Andersen 120 downloads
- British Butterflies: Figures and Descriptions of Every Native Species W. S. Coleman 118 downloads
- Mink Trapping: A Book of Instruction Giving Many Methods of Trapping A. R. Harding 116 downloads
- Color Key to North American Birds Frank M. Chapman 116 downloads
- A Review of the Frogs of the Hyla bistincta Group William Edward Duellman 115 downloads
- A Bilateral Division of the Parietal Bone in a Chimpanzee; with a Special Reference to the Oblique Sutures in the Parietal Aleš Hrdlička 114 downloads
- House Rats and Mice David E. Lantz 114 downloads
- Middle American Frogs of the Hyla microcephala Group William Edward Duellman and M. J. Fouquette 113 downloads
- The Squirrels and other animals George Waring 112 downloads
- Systematic Status of a South American Frog, Allophryne ruthveni Gaige John D. Lynch and Howard L. Freeman 112 downloads
- The Adductor Muscles of the Jaw In Some Primitive Reptiles Richard C. Fox 110 downloads
- Amphibians and Reptiles of the Rainforests of Southern El Petén, Guatemala William Edward Duellman 110 downloads
- An Experimental Translocation of the Eastern Timber Wolf Thomas F. Weise, William Laughlin Robinson, Richard A. Hook, and L. David Mech 108 downloads
- On the Origin and Metamorphoses of Insects Sir John Lubbock 107 downloads
- A New Extinct Emydid Turtle from the Lower Pliocene of Oklahoma Edwin C. Galbreath 106 downloads
- The Systematics of the Frogs of the Hyla Rubra Group in Middle America Juan R. León 105 downloads
- Profitable Squab Breeding Carl Dare 105 downloads
- Illustrative Anecdotes of the Animal Kingdom Samuel G. Goodrich 104 downloads
- Humpback Whales in Glacier Bay National Monument, Alaska United States. Marine Mammal Commission 102 downloads
- Check-list of the Birds of Kansas Harrison Bruce Tordoff 102 downloads
- Selected Records of Reptiles and Amphibians from Kansas Hobart M. Smith and John Breukelman 101 downloads