The sylvatic cycle refers to the transmission of a disease between wild animals in a natural environment. Synonyms for this term can include zoonotic cycle, wildlife cycle, or forest cycle, given that the transmission primarily occurs in animals living within forested areas, as well as in areas where humans come into contact with animals. These cycles can be the source of emerging diseases with significant public health implications, as seen with the outbreak of Ebola virus and other similar viruses. Understanding the sylvatic cycle and identifying potential vectors can help with disease management and prevention.