The studies on biological aerosol carried out at the Arctic fox farm showed the mean concentration of mesophyllic bacteria in the examined air – 5.13 × 102 CFU/m3, while the total bacteria count reached 4.22 × 104 CFU/m3, which pointed to low air contamination. Among the determined microbes, there was confirmed the presence of coagulaso-negative staphylococci (CNS), Gram-negative bacteria, cocci, bacteria of Proteus, Corynobacteriaceae genus and molds of Mucor, Cladosporium, Aspergillus genus as well as Penicillium and Ulocladium. The research material including animal and environmental swabs showed the highest percentage of CNS (20.69%), while no presence of Staphylococcus aureus or Streptococcus was recorded.