The book "A new species of tree rat (Neotoma) from northeastern Mexico" by Alvarez, Ticula is an important study in the field of zoology and faunistics. In this work, the author focused on the identification and classification of a new species of tree rat from the northeastern region of Mexico. With meticulous research and a reasoned approach, Alvarez reveals the key characteristics of the new species, its behavior and ecology. The book will be a valuable source of information for scientists interested in the study of Mexican fauna and its diversity.