this tracks. i got a pair of furry ears from a friend a while back and the first time my cats saw me in them they both got pretty scared, to the point that they fluffed up their tails and did the sideways posture trying to look bigger. that was two very loving and affectionate cats seeing their human wearing ears in their home where they feel safe and comfortable. it would be absolutely terrifying for them to be in this situation and theyd probably freak out just as much. people forget that cats are prey animals too and they have the prey instinct like any small animal, so seeing an evidently large predator they arent familiar with will make them freak out.