Zoonoses are infectious diseases transmitted between animals and humans or at an advanced stage from human to human. It can also be transmitted from humans to animals. When this happens, it is called reverse zoonosis. Emerging zoonoses are newly recognized or newly evolved infectious diseases, while re-emerging zoonoses have occurred previously but have more recently shown an increase in incidence or expansion into a new geographic, host, or vector range. The concept of “emerging diseases” developed as health scientists documented and attempted to explain the apparent and sharp increase in the number of new and important infectious diseases over the past two decades (Bengis et al. , 2004). Zoonosis can be transmitted in different ways: 1) Viral, among which the best known are: HIV, Ebola virus, hantavirus, rabies, Hendra virus, Nipah virus, Menangle virus infection, West Nile virus infection, syndrome severe acute respiratory, avian. Infection with influenza and Monkeypoxvirus. 2) Bacterial: Lyme borreliosis, Ehrlichiosis, Bovine tuberculosis (Mycobacterium bovis), Brucella, Tularemia, Plague and Leptospirosis. 3) Parasite: Cysticercosis/Teniasis, Rematodosis, Echinococcosis/Hydatidosis, Toxoplasmosis and Trichinellosis. 4) Dermatophytoses and SporotrichosisZoonosis poses an unknown threat to humanity since ancient times, when sanitation was not a concern and consumption of bushmeat was widespread. Zoonoses began to become a real social problem with the beginning of agriculture. People lived in small groups and rarely had contact with different tribes. Everything changed when plantings began on one site and people began to gather in small towns that quickly grew into cities. Formerly a popular pathogen middle of paper (Bengis et al., 2004). Exotic animal trade; Transport of livestock (Greger, 2007). Although there are four forms of zoonosis, two of them are much more widespread and available for contraction. The first is viral, because transmission through the air is much faster and faster. Zoonotic viral infection can become a real problem if it is well established in the region and even worse if it is adapted to human-to-human transmission. That said, if left untreated, this problem could become endemic in certain regions or populations. And if not properly controlled, it could turn into a pandemic situation spreading throughout the country and neighboring counties, and even the entire world. The second is bacteria, which do not spread as quickly as viruses but still have a significant impact on animal and human populations. It can cause contamination of food and water origin.