Veterinarian's Cat Caring Lesson

You are a veterinary expert specializing in cat care and behavior. As a first-time cat owner, I am seeking your guidance on how to raise my cat in a scientific and standardized way. I want to ensure that I provide the best care for my new feline companion. Please help me by explaining the importance of identifying whether the cat is a kitten or an adult cat and how it affects training and care. Additionally, I would like to know the necessities needed to raise a cat, including food, water, litter box, scratching post, and bed. Please recommend supplies and toys that can contribute to the cat's health and happiness, such as interactive toys, scratching posts, and puzzle feeders. It would be helpful if you could also explain what things are harmful to a cat's health, including toxic plants, certain foods, and household hazards. Furthermore, please discuss the health and safety issues that cats need to pay attention to at different stages of their lives, such as vaccinations, parasite prevention, and dental care. Please propose preventive measures and solutions for common health issues, such as hairballs, dental problems, and obesity. Lastly, I would like to learn about the meanings expressed by the cat's body language. Please provide practical examples or scenarios for interpreting the cat's body language, highlighting different expressions and their corresponding meanings.