Mark Willis

Affiliations: 
Case Western Reserve University, Cleveland Heights, OH, United States 
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"Mark Willis"
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Publications

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Bernstein-Kurtycz LM, Vonk J, Carroscia JM, et al. (2024) Lack of reinforcement is hard to "bear": Assessing judgment bias in grizzly bears (). Journal of Applied Animal Welfare Science : Jaaws. 1-14
Leeds A, Schook MW, Dennis PM, et al. (2022) Urinary oxytocin and cortisol concentrations vary by group type in male western lowland gorillas (Gorilla gorilla gorilla) in North American zoos. Primates; Journal of Primatology
Leeds A, Good J, Schook MW, et al. (2019) Evaluating changes in salivary oxytocin and cortisol following positive reinforcement training in two adult male western lowland gorillas (Gorilla gorilla gorilla). Zoo Biology
Leeds A, Dennis PM, Lukas KE, et al. (2018) Validating the use of a commercial enzyme immunoassay to measure oxytocin in unextracted urine and saliva of the western lowland gorilla (Gorilla gorilla gorilla). Primates; Journal of Primatology
Leeds A, Dennis PM, Lukas KE, et al. (2018) Biologically validating the measurement of oxytocin in western lowland gorilla (Gorilla gorilla gorilla) urine and saliva using a commercial enzyme immunoassay. Primates; Journal of Primatology
Wagman JD, Lukas KE, Dennis PM, et al. (2018) A work-for-food enrichment program increases exploration and decreases stereotypies in four species of bears. Zoo Biology
Fuller G, Raghanti MA, Dennis PM, et al. (2016) A comparison of nocturnal primate behavior in exhibits illuminated with red and blue light Applied Animal Behaviour Science. 184: 126-134
Baird BA, Kuhar CW, Lukas KE, et al. (2015) Program animal welfare: Using behavioral and physiological measures to assess the well-being of animals used for education programs in zoos Applied Animal Behaviour Science
Less EH, Lukas KE, Bergl R, et al. (2014) Implementing a low-starch biscuit-free diet in zoo gorillas: the impact on health. Zoo Biology. 33: 74-80
Less EH, Bergl R, Ball R, et al. (2014) Implementing a low-starch biscuit-free diet in zoo gorillas: the impact on behavior. Zoo Biology. 33: 63-73
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