Animal models serving in research may have an existing, inbred or induced disease or injury that is similar to a human condition. These test conditions are often termed as animal models of disease. Pre-clinical studies follow strict regulatory standards. These standards protect animals and help produce reproducible study results. It includes research studies that advances knowledge and improves the health and wellbeing of animals. All clinical science research studies are carefully planned and experts reviewing the proposed experiment involving animals weigh several considerations before approving each study. It concentrates on problems related to the causes, diagnosis and treatment of problems affecting animals. Veterinary clinical sciences deal with studies that explore whether a medical strategy, treatment, or device is safe and effective for treatment of diseases in animals. Clinical sciences are the best way to study diseases and effective treatments because the disease being studied and treated is an organic event taking place spontaneously in nature, rather than being imposed within an artificial laboratory environment.