After the age of 30, the prostate cells in men start multiplying resulting in the gradual growth of the prostate gland in men. The reason behind the rapid multiplication of the cells is the conversion of one hormone into another more powerful hormone as age advances.
Unlike dog aggression , which basically occurs due to the inherent dominant nature of dogs, feline aggression is most of the times a playful activity. Cats seldom indulge in aggression without provocation.