This document discusses animal welfare for 4th year veterinary students. It introduces animal welfare as how an animal copes with its living conditions, and defines an animal with good welfare as healthy, comfortable, safe, and able to express natural behaviors without suffering. Good animal welfare requires preventing disease, providing shelter, humane handling, and meeting nutritional needs. The "Five Freedoms" framework assesses welfare based on an animal's freedom from hunger, discomfort, pain, fear, and ability to express normal behaviors. The document emphasizes that animals experience feelings and sensations, so their welfare is important and should be properly cared for.