In 'Animal Parasites and Messmates' by P. J. van Beneden, the author delves into the intricate relationships between various animals and parasites, highlighting the complexities of cohabitation and parasitism in the animal kingdom. Van Beneden's writing style is both informative and engaging, providing detailed descriptions of different animal species and their interactions with parasites. The book is a significant contribution to the field of parasitology, offering valuable insights into the symbiotic relationships that exist in nature. Van Beneden's work is considered a classic in the study of animal parasites, with its meticulous observations and thorough analysis of parasitic behavior. His detailed accounts of different parasite species and their impact on host organisms make this book a must-read for anyone interested in the fascinating world of parasitism. 'Animal Parasites and Messmates' is recommended for readers seeking a deeper understanding of the delicate balance between animals and their parasitic counterparts.