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. 2021 Nov 23;11(12):3346. doi: 10.3390/ani11123346

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Illustration of relationship between Canine Frustration Questionnaire (CFQ) OQS (overall questionnaire score) and PC (principal component) score with selected behaviour test battery measures. Above the dotted line represents CFQ OQS/PC1 testing with behaviour measures from full test battery (represented by green box); below the dotted line represents CFQ PC2-PC5 testing with single behaviour test measures (represented by blue box) The solid line represents a significant positive correlation. Red cross indicates absence of behaviour seen during test therefore no associations tested, and orange box represents proposed behavioural measure not tested.