Signs of acute stress

• Immobility: shaking body crouched on top of all fours, head lower than body, tail tucked close to body, eyes fully open with dilated pupils, ears flattened back, whiskers back
• Vocalization: distressed meow, yowling, growling or silence
• Aggression if approached, hissing, drooling
• Involuntary urination or defecation

Signs of chronic stress

• Being hyper alert, jumping at the quietest sounds
• Urine spraying indoors, defecation in inappropriate places, not using litter tray
• Increased resting or pretending to be asleep
• Changes in general behavior: not wanting to play or groom, overgrooming becoming either clingier or more withdrawn, agression
• Increased scratching on surfaces or facial rubbing
• Not wanting to eat or overeating (depending on personality)