The emergence of zoonotic infectious diseases poses a significant threat to human and animal health. Understanding the factors influencing the emergence of these diseases is crucial for effective prevention and control strategies. Livestock populations act as reservoirs for zoonotic pathogens, circulating silently and potentially infecting humans. Disease transmission, pathogenesis, and genetic diversity within and across the livestock and human populations play a significant role in disease susceptibility, thus increasing the risk of disease emergence. These factors also hinder disease surveillance, control measures, and timely interventions, allowing disease to spread among different geographical regions. The deviations in human and animal behavior, habitat, ecology, vector biology, pathogen adaptability, use of antibiotics, livestock farming, production systems, food safety, malnutrition, urbanization, deforestation, and climate contribute to the emergence of highly infectious diseases. In addition, wildlife animals also serve as a reservoir of zoonotic pathogens which cause newly emerging and reemerging zoonotic diseases. Therefore, understanding and addressing these factors is essential for effective prevention and adaptation of control measures to mitigate the high risk of zoonotic disease emergence, re-emergence, transmission, and spreading in livestock and human populations.