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Opportunistic Evidence of the Impact of Bacterial Infections on Social Integration in Vampire Bats

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Gibbons (Hylobates spp.) Show Increased Attention to Eyes When Viewing Conspecific Faces: An Eye-Tracking Study

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Operant Discrimination Of Emotional Calls In Rats: Are There Biological Constraints?

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The Exclusive Use of a Reach versus a Grasp When Foraging by the Mantled Howler Monkey (Alouatta palliata)

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Difficulties in the Learning of Same-Different Discrimination Using Multiple-Item Displays in Pigeons (Columba livia)

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Behavioral Development in Beluga Whale (Delphinapterus leucas) and Pacific White-Sided Dolphin (Aethalodelphis obliquidens) Calves at the Shedd Aquarium

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Why Don't All Animals Use Tools?

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