This work serves as an educational resource on animal ecology, outlining the principles and methods for studying ecological relationships among animals and their environments. It emphasizes the importance of ecological surveys and field studies, providing guidance on specimen collection, preservation, and scientific techniques. The text discusses the dynamic interactions between animals and their surroundings, including metabolic processes, behavior, and the struggle for existence. Additionally, it offers a curated list of references for further exploration of life histories and ecological literature, aiming to equip beginners with a foundational understanding of ecological concepts and research methodologies.