In recent years, there has been a marked increase in the consumption of animal meat within human food diets. In addition, the considerable importance that the livestock sector plays towards the consumption of natural resources is ascertained, among which water is one of the main ones. To the aim of this study, the unit water footprint of farm animal products was calculated, and the volumes necessary to produce them were listed. The analysis spans a time frame from 1986 to 2016, and detailed information on the diet of the animals and the yields of crop products they feed on has been carefully conducted.