EN
Aims of this review study was an analysis of methods of environmental resources utilization by animals and synthesis of this methods applications examples in grassland sciences. Studies about animal-habitat evolved from percentage description of habitat resources utilization to selectivity indices and linear models. Except resources availability and utilization, this analyses allows to conclude about animal’s selectivity and preference, and they could be used as a tool in studies about grassland management and environmental protection. Also, this studies can exploit number of research entities and subjects. This causes, that analyses of animal’s resources utilization can be applied in grassland sciences.