This document provides information about cat behavior and how to understand common behaviors that may seem aggressive. It discusses how cats are territorial animals and how behaviors like rubbing against people or jumping at feet are usually not signs of aggression but rather natural behaviors. The document also explains that while cats can behave aggressively at times due to instincts like hunting, most aggressive behaviors are not signs that something is wrong with the cat. It advises owners to consider what may have provoked the behavior, like overexcitement from play, before becoming concerned.