One of the defining characteristics of nomadic pastoral life and mobility is its fundamental relation to changing seasons. Mobility and life are seasonal, governed by distinct temporal modalities which not only inform decisions of when, where and how to move with animals, but the way people interact, their tempo, mood and indeed their choice of clothing, food and structural configuration of their tents. As is the case with most nomadic pastoralist groups inhabiting Sahelo-Saharan zone, the relatively fixed cyclic migration patterns of the nomadic pastoralists of south-eastern Mauritania are governed by a set of general indicators. A worrisome effect of prolonged droughts is that the migrations between North and South tend to become suspended as nomadic pastoralists hold their animals on the southern pastures for extended periods of the year. As mobile livestock rearing becomes constrained, nomadic pastoral life is rendered even more hard and strenuous, compelling increasing numbers of people to settle down for longer periods of the year.