The experiment measured the seasonal effects of goats and sheep grazing on the dynamics of garrigue vegetation over six years. Goats were chosen for their ability to eat bushes and trees. The ligneous cover (percentage of the total area and average height of each main plant species) of each paddock was measured before and after the grazing periods along 0.50 m x 20 m transects. Grazing lengths decreased by 61 per cent, 34 per cent, 25 per cent and 11 per cent for spring, summer, autumn and winter. Genista scorpius disappears if it is grazed in flowering period, Juniperus oxycedrus disappears whatever the season. Liveweight and body scores at the start and the end of the different periods did not differ either for goats or sheep.