Lambert, T. D., Kays, R. W., Aliaga-Rossel, E., Jansen, P., and Wikelski, M. 2009. Nocturnal Activity by the Primarily Diurnal Central American Agouti (Dasyprocta punctata) in Relation to Environmental Conditions, Resources Abundance and Predation Risk. Journal of Tropical Ecology 25:1-5.

Kays, R. W., Curtis, A., and Kirchman, J. J. 2009. Rapid Adaptive Evolution of Northeastern Coyotes via Hybridization with Wolves. Biology Letters 5:doi:10.1098/rsbl.2009.0575.

Galvez, D., Kranstauber, G., Kays, R. W., and Jansen, P. A. 2009. Scatter Hoarding by the Central-American Agouti: A Test of Optimal Cache Spacing Theory. Animal Behaviour 2009:doi:10.1016/j.anbehav.2009.08.01.

Helgen, K. M., Kays, R. W., Helgen, L. E., Tsuchiya-Jerep, M. T. N., Pinto, C. M., Koepfli, K.-P., Eizirik, E., and Maldonado, J. E. 2009. Taxonomic Boundaries and Geographic Distributions Revealed by an Integrative Systematic Overview of the Mountain Coatis, Nasuella (Carnivora: Procyonidae). Small Carnivore Conservation 41:65-74.

Aliaga-Rossel, E., Kays, R. W., and Fragoso, J. M. V. 2008. Home-range use by the Central American Agouti (Dasyprocta punctata) on Barro Colorado Island, Panama. Journal of Tropical Ecology 24:367-374.

Crofoot, M. C., Gilby, I. C., Wikelski, M. C., and Kays, R. W. 2008. Interaction Location Outweighs the Competative Advantage of Numerical Superiority in Cebus capucinus Intergroup Contests. Proceedings of the National Academy of Sciences 105:577-581.

Kays, R. W., Gompper, M. W., and Ray, J. C. 2008. Landscape Ecology of Eastern Coyotes Based on Large-Scale Estimates of Abundance. Ecological Applications 18:1014-1027.

Kays, R. W. 2008. Not-So-Sleepy Sloths: Animal EEG Studies Enlighten Scientists. Legacy: The Magazine of the New York State Museum 4(3):10.

Franklin, S. P., Kays, R. W., Moreno, R., TerWee, J. A., Troyer, J. E., and VandeWoude, S. 2008. Ocelots on Barro Colorado Island Are Infected with Feline Immunodeficiency Virus but Not Other Common Feline and Canine Viruses. Journal of Wildlife Diseases 44:760-765.

Mares, R., Moreno, R. S., Kays, R. W., and Wikelski, M. 2008. Predispersal Home Range Shift of an Ocelot Leopardus pandalis (Carnivora: Felidae) on Barro Colorado Island, Panama. Revista de Biolog￭a Tropical 56:779-787.

Rattenborg, N., Voirin, B., Vyssotski, A. L., Kays, R. W., Spoelstra, K., Kuemmeth, F., and et al., . 2008. Sleeping Outside the Box: Electroencephalographic Measures of Sleep in Sloths Inhabiting a Rainforest. Biological Letters 4:402-405.

Kays, R.W. 2007. An Appointment with Death. BBC Wildlife 25:50-55.

Kays, R.W. 2007. Bats: Gone with the Wind?. Legacy: The Magazine of the New York State Museum 3(1):16.

Kays, R.W. 2007. CSI: Adirondacks Biologists Use Crime Scene Techniques to Study Fishers. Legacy 3(3):13.

Wikelski, M., Kays, R., Kasdin, J., Thorup, K., Smith, J.A., Cochran, W.W., and Swenson, G.W., Jr. 2007. Going Wild: What a Global Small-animal Tracking System Could do for Experimental Biologists. Experimental Biology 210:181-186.

Kays, R.W. 2007. Skulls Tell Their Stories. Legacy: The Magazine of the New York State Museum 2(4):8-9.

Herzog, C.J., Kays, R.W., Ray, J.C., Gompper, M.E., Zielinski, W.J., Higgins, R., and Tymeson, M. 2007. Using Patterns in Track Plate Footprints to Identify Individual Fishers. Journal of Wildlife Management 71:955-963.

Franklin, S.P., Troyer, J.L., TerWee, J.A., Lyern, L.M., Kays, R.W., Riley, S.P.D., Boyce, W.M., Crooks, K.R., and Vanderwoude, S. 2007. Variability in assays used for detection of lentiviral infection in bobcats (Lynx rufus), pumas (Puma concolor), and ocelots (Leopardus pardalis). Journal of Wildlife Diseases 43(4):700-710.

Moreno, R. S., Kays, R. W., and Samudio Jr., R. 2006. Competitive Release in Diets of Ocelot (Leopardus pardalis) and Puma (Puma concolor) After Jaguar (Panthera onca) Decline. Journal of Mammalogy (4):808-816.

Patterson, B. D., Kays, R. W., Kasiki, S. M., and Sebestyen, V. M. 2006. Developmental Effects of Climate on the Lion's Mane (Panthera leo). Journal of Mammalogy 87:193-200.

Gompper, M.E., Kays, R.W., Ray, J.C., LaPoint, S.D., Bogan, D.A., and Cryan, J. R. 2006. Gompper, M. E., Kays, R. W., Ray, J. C., LaPoint, S. D., Bogan, D. A., & Cryan, J. A. (2006). A Comparison of Non-invasive Techniques to Survey Carnivore Communities in Northeastern North America. Wildlife Society Bulletin 34:1142-1151.

Kays, R. W. 2006. My Kingdom for a Crown. Natural History 115(4):72.

Aliaga-Rossel, E., Moreno, R. S., Kays, R. W., and Giacalone, J. 2006. Ocelot (Leopardus pardalis) Predation on Agouti (Dasyprocta punctata). Biotropica 36:691-694.

Kays, R. W. 2006. The Mane Thing about Lions. Legacy: The Magazine of the New York State Museum 2(2):7.

Kays, R. W. 2005. Mapping Mammals: Moving from Paper Tags to Digital Maps. Legacy: The Magazine of the New York State Museum 1(1):3-4.

Dubach, J., Patterson, B.D., Briggs, M.B., Venzke, K., Flamand, J., Stander, P., Scheepers, L., and Kays, R.W. 2005. Molecular Genetic Variation Across the Southern and Eastern Geographic Ranges of the African Lion, Panthera leo. Conservation Genetics 16:15-24.

Patterson, B. D., Kasaki, S. M., Selempo, E., and Kays, R. W. 2004. Livestock Predation by Lions (Panthera leo) and Other Carnivors on Ranches Neighboring Tsavo National Parks, Kenya. Biological Conservation 19:507-516.

Kays, R. W., and DeWan, A. A. 2004. The Ecological Impact of Inside/Outside House Cats Around a Suburban Nature Preserve. Animal Conservation 7:1-11.

Gompper, M. E., Goodman, R. M., Kays, R. W., Ray, J. C., Fiorello, C. V., and Wade., S. E. 2003. A Survey of Parasites of Coyotes (Canis latrans) in New York Based on Fecal Analysis. Journal of Wildlife Diseases 39:712-717.

LaPoint, S. C., Kays, R. W., and Ray, J. C. 2003. Do Mammals Use Culverts to Cross Interstate 87 within the Adirondack Park?. Adirondack Journal of Environmental Studies 10:11-17.

Johnson, D., MacDonald, D., Kays, R. W., and Blackwell, P. G. 2003. Response to Revilla, and Buckley and Ruxton: The Resource Dispersion Hypothesis. Trends in Ecology and Evolution 18:381.

Johnson, D. D. P., Kays, R. W., Blackwell, P. G., and MacDonald, D. W. 2002. Does the resource dispersion hypothesis explain group living?. Trends in Ecology and Evolution 17:1-8.

Kays, R. W. 2002. Lion: Panthera leo. The Encyclopaedia Britannica

Kays, R. W., and Patterson, B. D. 2002. Mane Variation in African Lions and Its Social Correlates. Canadian Journal of Zoology 80:471-478.

Kays, R. W. 2002. The How and Why of Radio-tracking: A Review of "A Manual for Wildlife Radio Tagging (Kenward 2001) and Radio Tracking and Animal Populations (Millspaugh and Marzluff eds.)". Animal Conservation 3:259.

Kays, R. W., and Allison, A. 2001. Arboreal Tropical Forest Vertebrates: Current Knowledge and Research Trends. Plant Ecology 153:109-120.

Kays, R. W., and Gittleman, J. L. 2001. The Social Organization of the Kinkajou Potos flavus (Procyonidae). Journal of Zoology 253:491-504.

Kays, R. 2000. Keeping the Peace in Tsavo National Park. In The Field 71(2):2-7.

Kays, R. W., Gittleman, J. G., and Wayne, R. K. 2000. Microsatellite Analysis of Kinkajou Social Organization. Molecular Ecology 9:743-751.

Kays, R. W. 2000. The Behavior of Olingos (Bassaricyon gabii) and Their Competition with Kinkajous (Potos flavus) in Central Panama. Mammalia 64:1-10.

Kays, R. W., and D. E. Wilson. 2002. Mammals of North America. Princeton University Press, Princeton, New Jersey.

Kays, R. W. 2009. Family Procyonidae (Raccoons). In Handbook to Mammals of the World: Volume 1 - The Carnivores, edited by D. Wilson, and R. Mittermeir, pp. 498-530. Lynx Editions, Barcelona, Spain.

Kays, R. W., and R. A. Daniels. 2009. Fish and Wildlife Communities of the Adirondacks. In The Great Experiment in Conservation: Voices From the Adirondack Park, edited by W. Porter, J. Erickson, and R. Whaley, pp. 71-86. Syracuse University Press, Syracuse, New York.

Kays, R. W., and K. M. Slauson. 2008. Remote Cameras. In Noninvasive Survey Methods for Carnivores, edited by R. A. Long, P. MacKay, W. J. Zielinski, and C. J. Ray, pp. 110-140. Island Press, Washington, D.C..

Kays, R. W. 2008. Remote Cameras as a Tool for Broad Scale Wildlife Surveys. In Proceedings of the 2007 Animal-Borne Imaging Symposium, edited by G. Marshall, pp. 179-182. National Geographic Society, Washington, D.C..

Kays, R. W., R. A. Daniels, R. S. Mitchell, D. P. Molloy, and C. A. Siegfried. 2005. Exotic Species. In The Encyclopedia of New York, edited by P. Eisenstadt, and L.-E. Moss, pp. 538-539. Syracuse University Press, Syracuse, NY.

Macdonald, D.W., and R. W. Kays. 2005. The Carnivora: The Evolution, Adaptive Significance and Conservation of Their Diversity. In Walkers Carnivores of the World, edited by R. Nowak, Johns Hopkins University Press, Baltimore, Maryland.

Kays, R. W., and D. Bogan. 2003. Coyote. In Natural History of the Albany Pine Bush. New York State Museum Bulletin 502, edited by J. K. Barnes, pp. 161-162. The University of the State of New York, Albany, New York.

Kays, R. W., and D. Bogan. 2003. Fisher. In Natural History of the Albany Pine Bush. New York State Museum Bulletin 502, edited by J. K. Barnes, pp. 164. The University of the State of New York, Albany, New York.

Kays, R. W. 2003. Social Polyandry and Promiscuous Mating in a Primate-like Carnivore: the Kinkajou (Potos flavus). In Monogamy: Mating Strategies and Partnerships in Birds, Humans and Other Mammals, edited by U. H. Reichard, and C. Boesch, pp. 125-137. Cambridge University Press, Cambridge, United Kingdom.

Pickering, J., R. W. Kays, A. Meier, S. Andrew, and K. Yatskievych. 2002. Appalachian Mountain Wilderness. In Wilderness: Earth's Last Wild Places, edited by R. A. Mittermeier, C. G. Mittermeier, P. L. Gil, J. Pilgrim, and G. Fonseca, T. Brooks, and W. R. Konstant, Conservation International, Washington, D.C..

Kays, R., and A. Allison. 2001. Arboreal Tropical Forest Vertebrates: Current Knowledge and Research Trends. In Tropical Forest Canopies: Ecology and Management, edited by K. E. Linsenmair, A. J. Davis, B. Fiala, and M. R. Speight, pp. 109-120. Kluwer Academic Publishers.

Kays, R.W. 2001. Kinkajou. In The Encyclopedia of Mammals, edited by D. W. MacDonald, pp. 92-93. Oxford University Press, Oxford.

Kays, R. W. 2001. Olingos. In The Encyclopedia of Mammals, edited by D. W. MacDonald, pp. 94. Oxford University Press, Oxford.

Kays, R. W. 2001. Ringtail and Cacomistle. In The Encyclopedia of Mammals, edited by D. W. MacDonald, pp. 95. Oxford Univrsity Press, Oxford.