Animals benefit from biomedical research, as medical research carried out on animals leads directly to veterinary treatments. Vaccines now exist for fatal diseases such as feline leukaemia and canine distemper. Advances in veterinary medicine have helped to reduce the loss of farm and herd animals to sickness and disease, saving livelihoods all over the world. Vaccines and veterinary medicines are also used in conservation projects, helping protect endangered species by reducing the risk of disease. Animal testing and animal experiments are also crucial for animal health and the progress veterinary discoveries.