This book presents, in two parts, a review concerning the use of Rattus norvegicus as a model for the study of neurological disorders and oncological diseases (mammary cancer). In the first part, the neurological disorders are addressed in important neurological diseases, such as: Autism, Parkinsons, Huntingtons and Alzheimers disease, and two neuromotor dysfunctions (amyotrophic lateral sclerosis and ataxia). The second part reveals the importance of the rat as a model for the study of mammary cancer, presenting the diversity of rat strains and models available for the study of this...