Aristotle's History of Animals stands as a landmark of early science, here introduced through Richard Cresswell's careful English translation and scholarly apparatus. The preface highlights Aristotle's extraordinary powers of observation, his use of earlier now-lost authorities, and the deep ancient roots of animal study in Greek, Egyptian, and other traditions. It also explains the translator's efforts to clarify animal names through modern identifications and an extensive index. Across ten books, the work moves from broad classification to close study of anatomy, reproduction, behavior, and human fertility. Aristotle begins by comparing simple and compound body parts, then distinguishes exact likeness, difference of degree, and analogy in forms such as feathers, scales, and claws. He classifies animals by blood, limbs, senses, movement, habitat, and mode of life, tracing patterns among birds, fishes, cetacea, shellfish, mollusks, and other creatures. The later books examine generation, seasonal breeding, and the instincts, temperaments, and sexual behaviors of animals such as horses, cattle, boars, camels, and elephants. Rich in detail and range, the work blends zoology, physiology, and close natural observation into a foundational survey of living nature. This edition has been fully restored with modern typesetting, custom cover design.