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Individual acquisition and retention data for 3 example dogs, a young dog (Labrador, 3 years), an unimpaired aged dog (Labrador, 10 years) and an impaired aged dog (Golden retriever, 10 years). A) Time taken to reach the reward on control trials. B) Time taken to reach the buried reward on acquisition trials. C) Time to reach the 1-m2 annulus on acquisition trials and the probe retention trial.
