Senile Cats: Why My Cat Is Acting Weird and What to Do – 14 Pics FacebookMessengerTwitterPinterestReddit7. Increased Anxiety and Irritability Cats suffering from dementia become stressed out even under ordinary conditions. It causes them to become irritated. They become more anxious, thus becoming more restless. Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15