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Researchers observed that orangutan mothers facilitate play dates for their young, deliberately bringing infants together with peers. The behavior suggests a level of social planning previously undocumented in wild orangutans, a largely solitary species.
Researchers tested Goffin's cockatoos using a body-as-obstacle task, finding the birds stepped off a mat far more often when their own body was blocking access to a reward than in two control conditions. The effect appeared from the first session and held steady across repeated trials, and near-perfect performance in a pre-test ruled out discomfort or random movement as explanations.
A new study found that scent-detection dogs make more false-positive alerts when they have not eaten breakfast before starting work. Researchers observed that dogs on empty stomachs were more prone to signaling a scent that wasn't actually present, compared to dogs that had eaten beforehand.