While etiology and pathogenesis are reviewed, emphasis will be given on clinical signs, diagnosis, differential diagnosis, treatment, control and prevention. Students will learn to characterize the etiology, epidemiology, and clinical manifestations of infectious diseases of ruminants and equines, describe the main transmission routes for infectious diseases, including animal-human, human-animal, vector-borne, water-borne, and air-borne cycles, explain mechanism of development/pathogenesis of diseases caused by different infectious agents in ruminants and equines. The course also will focus on the etiology, epidemiology, and clinical manifestations of metabolic disorders, deficiency diseases, plant/chemical toxicities and animal poisons in livestock and pets.