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. 2019 Oct 4;14(10):e0212652. doi: 10.1371/journal.pone.0212652

Table 4. Final list of terms and their characterisations.

Term Definition
aggressive impetuous, shows signs and posture of defensive or offensive aggression
alert vigilant, inquisitive, on guard
anxious worried, unable to settle or cope with its environment, apprehensive
attention-seeking interactive, looking for contact/interaction, vying for people’s attention, affectionate
bored disinterested, passive, showing sub-optimal arousal levels/drowsiness signs
comfortable without worries, settled in its environment, peaceful with other dogs, people and external stimuli
curious actively interested in people or things, explorative, inquiring, in a positive relaxed manner
depressed dull, sad demeanour, disengaged from and unresponsive to the environment, quiet, apathetic
excited positively agitated in response to external stimuli, euphoric, exuberant, thrilled
explorative confident in exploring the environment or new stimuli, investigative
fearful timid, scared, timorous, doesn’t approach people or moves away, shows postures typical of fear
hesitant unsure, doubtful, shows conflicting behaviour, uncertain whether to approach or trust a stimulus, other dog or person
interested attentive, attracted to stimuli and attempting to approach them
nervous uneasy, agitated, shows fast arousal, unsettled, restless, hyperactive
playful cheerful, high spirits, fun, showing play-related behaviour, inviting others to play
reactive responsive to external stimuli
relaxed easy going, calm or acting in a calm way, doesn’t show tension
sociable confident, friendly toward humans and other dogs, appreciates human attentions, shows greeting behaviour
stressed tense, shows signs of distress
wary cautious, prudent, suspicious, circumspect