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Table 5 Ethogram. Description of the behavioral parameters that were scored. Bold parameters indicate those that were kept for the analyses (i.e., performed by > 50% of the animals of each species)

From: Cross-species discrimination of vocal expression of emotional valence by Equidae and Suidae

 

Abbreviation

Family

Description

Latency of reaction

1st behavior

Both

Latency between the beginning of the first sound broadcasted and the animal’s first behavioral reaction

1st vocalization

Both

Latency between the beginning of the first sound broadcasted and the animal’s first vocalization

1st movement

Both

Latency between the beginning of the first sound broadcasted and the animal’s first movement

Reaction toward the loudspeaker

Approaching the loudspeaker

Both

Proportion of time spent approaching the loudspeaker

Looking at the loudspeaker

Both

Proportion of time spent looking at the loudspeaker

Avoiding the loudspeaker

Both

Proportion of time spent walking away from the loudspeaker

Movements

Standing

Both

Proportion of time spent standing

Walking

Both

Proportion of time spent walking

Trotting

Equidae

Proportion of time spent trotting

Cantering

Equidae

Proportion of time spent cantering

Running

Suidae

Proportion of time spent running

Head

Head movements

Both

Number of head movement per minute

Head high

Both

Proportion of time spent with the line of the eyes above the tip of the shoulder

Head on the middle

Both

Proportion of time spent with the line of the eyes at the same level as the shoulder tip

Head low

Both

Proportion of time spent with the line of the eyes below the tip of the shoulder

Ear

Ear movements

Both

Number of ear movements per minute

Ear on the sides

Both

Proportion of time spent with the ears on both sides of the head (perpendicular to the head axis)

Ear backwards

Both

Proportion of time spent with the ears orientated backwards

Ear forwards

Both

Proportion of time spent with the ears orientated forwards

Tail

Tail movements

Both

Number of tail movements per minute

Tail high

Both

Proportion of time spent with the tail base above the tip of the hindquarters

Tail low

Both

Proportion of time spent with the tail base below the tip of the hindquarters

Vocalizations

Nicker

Equidae

Number of nickers per minute

Whinny

Equidae

Number of whinnies per minute

Squeal

Both

Number of squeals per minute

Grunt

Suidae

Number of grunts per minute

Scream

Suidae

Number of screams per minute

Other behaviors

Defecation

Both

Number of defecations per minute

Foraging

Both

Proportion of time spent foraging on the floor

Eating

Both

Proportion of time spent eating

Negative interaction

Both

Interactions that triggered an avoidance behavior  from  the other animal

Positive interaction

Both

Interactions that triggered an approach behavior toward the other animal