Animal models are organisms used in scientific research to mimic aspects of a disease, disorder, or condition in humans. These models can be genetically engineered to exhibit certain traits or characteristics of human diseases, allowing researchers to study the underlying mechanisms and potential treatments. Animal models are an essential tool in biomedical research for understanding complex biological processes, testing new drugs and therapies, and ultimately improving human health. Some commonly used animal models include mice, rats, zebrafish, and fruit flies.