This book covers a variety of topics related to the psychological well-being of cats. Informations are gathered from over 20 scientists. From cats evolution and relationship with humans to their complex communication, socialization, and behavior. It also explores the impact of stress, anxiety, and aggression on cats, and the role of play, training, and environmental enrichment in their mental health. The book further discusses the connection between feline health and psychological well-being, as well as coping strategies for separation anxiety and feline anxiety disorders. Finally, it provides insights into helping shelter cats thrive by understanding and addressing the unique psychological challenges they face, ultimately promoting their successful adoption and well-being.