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. 2021 Feb 2;11:2773. doi: 10.1038/s41598-021-82439-2

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© The Author(s) 2021, corrected publication 2021

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Aggressive behaviour towards humans of dogs receiving olive oil as a placebo at the start of the study (T₀), after 15 (T₁) and 45 (T₂) days from the beginning of the treatment, and 15 days after the end of the administration of olive oil (T₃). The black bars within the box plots indicate the median; the dots represent the outliers.