Unusual aggression or sudden unprovoked attacks
Extreme fearfulness or hiding behavior
Acting disoriented, confused, or restless
Excessive drooling or foaming at the mouth
Difficulty swallowing
Change in vocalization, such as unusual meowing or yowling
Paralysis or weakness, especially in the hind legs
Staggering, loss of coordination, or wobbling
Seizures or tremors
Biting at objects, animals, or people without reason
Sudden change from friendly behavior to abnormal behavior
Signs of illness after a bite or scratch from a wild animal
Immediate veterinary evaluation if rabies is suspected