This Atlas covers the major infectious diseases, nutritional metabolism diseases, poisoning diseases and other diseases in domestic animals, including pigs, birds, cattle, sheep, rabbits, dogs, cats, and other animals. Each disease is presented with pictures, the pathological features and diagnosis points. This book is rich in materials and has high academic value in combination with theory and practice. It serves as a valuable reference book for students, researchers and professionals in veterinary medicine, animal food hygiene, and comparative medicine, supporting teaching, research, disease prevention and control. This monograph has 2 volumes. This volume 1 focuses on basic pathology, including lesions of cells and tissues, circulation disorders, adaptation and repair of tissues, inflammation, tumors, and the pathology of major systems.