This paper deals with the nature of a primary and secondary pain in domestic animals and reasons for its occurrence. The above-mentioned problem is very important, as pain, apart from causing animal suffering, can also bring about significant economic losses. Attempts to prevent and limit pain fulfill expectations of meat consumers from many countries, who are interested in humanitarian aspects of the relationship between people and animals. The clients are looking forward to obtain products from animals when they are convinced that a high level of welfare has been assured on each stage of their production.