During the montanera, pigs interact directly or indirectly with other livestock species (cows, goats or sheep) and with different species of wild animals (wild boar or deer, among others), sharing space and natural resources, but also communicable diseases. Specifically, the study focuses on the transmission of animal tuberculosis, a disease with great impact on the livestock sector and with implications for the management and conservation of wild species. During the study, they monitored, using geolocation collars, the movements of six deer, six wild boars, eight Iberian pigs and three cows in five adjacent extensive livestock farms located in the province of Cáceres in Spain. In addition, it was detected that interactions tended to occur during the central hours of the day, the time of most livestock activity, as well as at dusk, when wild ungulate species are most active. Furthermore, the Iberian deer turned out to be the species that interacted the most with other animals, demonstrating that wild ungulates can play a fundamental role in the transmission of pathogens in extensive livestock farms.