Rat models refer to the use of rats in research studies to simulate human diseases, conditions, and behaviors. Rats are often used in scientific research due to their physiological, genetic, and behavioral similarities to humans. Researchers use rat models to study a wide range of biological processes, including drug interactions, genetics, neurology, and behavior. These models allow researchers to test hypotheses and develop treatments for various human diseases, providing valuable insights into the mechanisms of diseases and the effectiveness of potential treatments. Rat models are a key tool in biomedical research and have contributed significantly to our understanding of human health and disease.