This document discusses how to interpret cats' body language and moods based on the positioning of their tails and ears. It explains that an upright or relaxed tail indicates alertness or relaxation, while a flared tail shows threat. Ear positions like forward, upright, back or flat also communicate moods like friendliness, alertness or agitation. Rapid tail movement or flattening ears and tail shows irritation or readiness to pounce. Understanding these signals helps owners know when a cat feels happy, nervous or wants to be left alone.