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Diurnal and Nocturnal Activity Time Budgets of Asian Elephants (Elephas maximus) in a Zoological Park

Denise E. Lukacs, Melanie Poulin, Hayley Besenthal, Otto C. Fad, Stephen P. Miller, James L. Atkinson, and Esther J. Finegan

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The Effect of Positive Reinforcement Training on an Adult Female Western Lowland Gorilla's (Gorilla gorilla gorilla) Rate of Abnormal and Aggressive Behavior

Austin Leeds, Roby Elsner, and Kristen E. Lukas

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A Tool Use Task Proves Enriching for a Captive Sea Otter (Enhydra lutris)

Pepper R. Hanna, Erin E. Frick, and Stan A. Kuczaj II

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Social Context Predicts Vocalization Use in the Courtship Behaviors of Weddell Seals (Leptonychotes weddellii): A Case Study

Ludivine R. Russell, Jesse E. Purdy, and Randall W. Davis

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