- The river otter (Lutra canadensis) in northwest Colorado: Historical distribution, present status, and future prospects, 1984 by Ana Dronkert, 1984
- EFFECTS OF THE EXXON VALDEZ OIL SPILL ON RIVER OTTERS: INJURY AND RECOVERY OF A SENTINEL SPECIES. by R., Et al. Bowyer, 2003-01-01
- North American River Otter: Continent, Mustelidae, Amphibian, Pollution, List of Semiaquatic Organisms, Miocene
- River Otter at Autumn Lane 3-Piece Set (Hardcover Book, Tape and 6 Plush Toy) by Laura Gates Galvin, 2009-04
- Distribution Of River Otters In California: With Description Of A New Subspecies (1914) by Joseph Grinnell, 2010-09-10
- Concentrations of PCBs, organochlorine pesticides and heavy metals (lead, cadmium, and copper) in fish from the Drome river: Potential effects on otters (Lutra lutra) [An article from: Chemosphere] by A. Mazet, G. Keck, et all
- Wildlife in Peril: The Endangered Mammals of Colorado : River Otter, Black-Footed Ferret, Wolverine, Lynx, Grizzly Bear, Gray Wolf by John A. Murray, 1987-05
- A systematic review of the Nearctic and Neotropical River otters (genus Lutra, Mustelidae Carnivora) (Royal Ontario Museum. Life sciences contributions, no. 80) by C. G Van Zyll de Jong, 1972
- THE STATUS, POPULATION CHARACTERISTICS AND HARVEST OF THE RIVER OTTER IN MARYLAND. by E., Et al. Mowbray, 1979
- Natures Children River Otters by Dingwall, 1986
- Oscar, the River Otter (Signed By Author) by Doris Anne Holman, 2003
- Effects of the Exxon Valdez oil spill on river otters by R. Terry; Blundell, Gail M.; Ben-David, Merav Bowyer, 2003-01-01
- Distribution of River Otters in California, with Description of a New Subspecies by J. Grinnell, 1914-01-01
- White-winged Crossbills obtain forage from river otter feces.(Short Communications): An article from: Wilson Bulletin by Daniel Gallant, 2004-06-01
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