[header] How to recognize fear in cats [title] Understand that fear manifests itself physically in cats. [step] A fearful cat is in a state of physiological arousal. She has adrenaline, the fight-or-flight hormone, racing through her bloodstream. 
This stimulates the sympathetic nervous system to supply extra blood to her heart and muscles so that she is prepared for action. To spot signs of adrenaline, read the following steps.