This requires you as the parent to listen while regulating your own fear reaction. (postinstitute.com)
However, some cats develop abnormal fear reactions to other animals, people, new situations, places, noises, or objects. (cathealth.com)
Many animals release pheromones (chemical scent signals) under traumatic conditions that linger in the air and may cause fear reactions in animals that detect them. (riverviewanimalhospital.com)