Leyhausen’s facial expressions of offensive and defensive mood (taken from Leyhausen 1979) coded using CatFACS. A0B0: neutral face used for reference; A1B0: Upper lid raiser (AU105), Ears adductor (EAD 102), Ears rotator (EAD104), A2B0: Upper lid raiser (AU105), Eyes left (AD61), Ears rotator (EAD 104), A0B1: Pupil dilator (AD68), Ears flattener (EAD103); A1B1: Pupil dilator (AD68), Ears flattener (EAD103), Ears rotator (EAD104); A2B1: Ears flattener (EAD103), Ears Rotator (EAD104); A0B2: Lower lip depressor (AU116), tongue show (AD19), Lips part (AU125), Jaw drop (AU126), Mouth stretch (AU27), Vocalisations (AD50), Eyes up (AD63) Pupil dilator (AD68), Ears flattener (EAD103), Nose wrinkler (AU109), Upper lip raiser (AU110); A1B2: Tongue show (AD19), Lips part (AU25), Jaw drop (AU26), Pupil dilator (AD68), Ears flattener (EAD103); A2B2: Eyes up (AD63), Pupil dilator (AD68), Ears flattener (EAD103), Ears rotator (EAD104). See CatFACS.com for videos and descriptions of these actions.