11.   Giraffes slowly chewed leaves off high branches, while others ignored us as they calmly crossed the road.

12.   Indians, who have chewed the leaves for centuries, opposed government attempts to replace coca with food crops.

13.   Indigenous Bolivians who have chewed the leaves for centuries, opposed government attempts to replace coca with food crops.

14.   Indigenous Bolivians, who have chewed the leaves for centuries, opposed government attempts to replace coca with food crops.

15.   But in Yemen men also chew qat leaves, which contain amphetamines.

16.   Thousands of native people chew the leaf legally in Bolivia.

17.   Only the youngest and freshest leaves are chewed, the larger ones being discarded.