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https://www.selleckchem.com/products/3-deazaneplanocin-a-dznep.html However, enriched shelter dogs receiving enriched human exposure showed significant improvements reaching an identical performance to pet dogs within 7 weeks. In comparison, shelter dogs under standard conditions showed an initial improvement, but performance reached asymptote close to chance levels and lower than that of enriched dogs or pet dogs. Together, these results suggest that enriched experiences with humans, typical of pet dogs, is sufficient for dogs to learn to follow points without explicit training.Night migratory birds use the star compass for their navigation. Here, I examined discrimination of a starry sky by a nonmigratory bird, the pigeon. Four pigeons were trained in an operant chamber to discriminate between an artificial starry sky created using software (Stella Theater Pro) and a black sky without stars. After they learned the task, they received three generalization tests. Test 1 presented a starry sky with different classes of stars (i.e., the number of stars was changed). Test 2 presented a starry sky at different times (i.e., a horizontal shift of the sky). Test 3 presented a starry sky at different latitudes (i.e., a vertical shift of the sky). The pigeons displayed a clear generalization gradient with a peak shift to the sky with more stars in Test 1 and a peak close to the original sky in Test 3, but almost a flat gradient in Test 2. Therefore, pigeons demonstrated stimulus control using the pattern of the stars, and they were more sensitive to the vertical shift than to the horizontal shift.This paper aimed to explore and clarify the concept of behavioral flexibility. A selective literature review explored how the concept of behavioral flexibility has been used in ways that range from acknowledging the fact that animals' behavior is not always bounded by instinctual constraints, to describing the variation between species in their capacity for innovative foraging, a ca

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