The article discusses the possibilities of examining animal hair and skin in forensic practice. The most common biological animal evidence is traces of fur and skin. Common forensic methods of examining fur are to examine the morphology and structure microscopically or by DNA analysis. We classify trichological traces into forensic biology. In animals, it is possible to determine the type of animal according to the hair. In the vast majority, only group affiliation is determined, determining individual identification is very rare. The authors describe the composition of hair and animal skin and give examples of the study of animal footprints in forensic practice.