The textbook describes infectious diseases common to several animal species. When describing individual diseases, information is provided about the morphology and biology of pathogens, about the pathogenesis, clinical signs, pathoanatomic changes, diagnosis, as well as about control measures for a particular disease. The manual is intended for students, undergraduates and PhD doctoral students of the specialties “Veterinary medicine” and “Veterinary sanitation”, veterinary doctors. Key words: bacteriosis, anthrax, tuberculosis, brucellosis, leptospirosis, listeriosis, pasteurellosis, necrobacteriosis, tularemia, melioidosis, tetanus, botulism, pseudotuberculosis, virosis, foot-and-mouth disease, rabies, Aujeski’s disease, smallpox, mycoses, actinomycosis, dermatomycosis, trichophytia, favus, candidamycosis.