Aggression and tail biting in pigs is a multifactorial problem that does not have a single and simple solution and is a huge welfare problem in pig production in many countries around the world. It is also an economic problem causing a deterioration in the profitability of farms. This is an abnormal behavior that can be caused by a number of factors, usually frustration from unmet basic needs, inappropriate housing conditions or incorrect management of the farm. Docking is commonly used as a measure to prevent tail biting, but it does not completely solve the problem, rather it limits it and in itself also causes pain to the docked pigs. In general, it can be said that tail biting occurs under conditions that are stressful and the animals appear restless before the problem breaks out. It follows that poor living conditions can be the basis for the manifestation of aggressive behavior. Routine tail docking only partially masks stress in pigs. Tail biting is considered an abnormal behavior indicating stress in pigs, which can be caused by a variety of factors. According to the literature, the main risk factors include lack of environmental enrichment, air quality, health status, competition for feed and space, nutrition, lack of bedding, and small floor space per animal. The practice of tail docking on farms has expanded in connection with the intensification of pig production and the introduction of slatted floors.