Books in Animal (sorted by popularity)
- Mammals Obtained by Dr. Curt von Wedel from the Barrier Beach of Tamaulipas, Mexico E. Raymond Hall 123 downloads
- Ecological Studies of the Timber Wolf in Northeastern Minnesota L. David Mech, Louis Daniel Frenzel, Robert R. Ream, John W. Winship, and P. D. Karns 121 downloads
- Birds Illustrated by Color Photography, Vol. 3, No. 1 [January, 1898] Various 121 downloads
- Systematic Status of a South American Frog, Allophryne ruthveni Gaige John D. Lynch and Howard L. Freeman 120 downloads
- Science of Trapping Elmer Harry Kreps 119 downloads
- Birds, Illustrated by Color Photography, Vol. 2, No. 3 Various 119 downloads
- House Rats and Mice David E. Lantz 119 downloads
- Birds, Illustrated by Color Photography, Vol. 2, No. 6 Various 119 downloads
- Middle American Frogs of the Hyla microcephala Group William Edward Duellman and M. J. Fouquette 117 downloads
- The Industries of Animals Frédéric Houssay 115 downloads
- The Adductor Muscles of the Jaw In Some Primitive Reptiles Richard C. Fox 113 downloads
- Genera and Subgenera of Chipmunks John A. White 112 downloads
- A Guide for the Study of Animals Worrallo Whitney, Frederic Colby Lucas, Harold Brough Shinn, and Mabel Elizabeth Smallwood 112 downloads
- Illustrative Anecdotes of the Animal Kingdom Samuel G. Goodrich 111 downloads
- Mink Trapping: A Book of Instruction Giving Many Methods of Trapping A. R. Harding 110 downloads
- Birds, Illustrated by Color Photography, Vol. 2, No. 1 Various 109 downloads
- The Mammals of Washtenaw County, Michigan Norman Asa Wood 109 downloads
- The Minds and Manners of Wild Animals: A Book of Personal Observations William T. Hornaday 109 downloads
- Marvels of Pond-life Henry James Slack 106 downloads
- Fishes of the Wakarusa River in Kansas James E. Deacon and Artie L. Metcalf 102 downloads
- On the Origin and Metamorphoses of Insects Sir John Lubbock 101 downloads
- The Raising and Care of Guinea Pigs Allen Christian Smith 101 downloads
- Birds, Illustrated by Color Photography, Vol. 1, No. 3 Various 100 downloads
- Fish Stories Henry Abbott 100 downloads
- Myology and Serology of the Avian Family Fringillidae: A Taxonomic Study William B. Stallcup 97 downloads