Giraffes use both semi-arid savannah and savannah woodlands in Africa.he giraffe could be considered the early warning system of the African grasslands. Herds of three or more giraffes spend hours browsing in Acacia Tickets greedily gobbling up as much of the delicious foliage as they can. Herds of three or more giraffes spend hours browsing in Acacia Tickets greedily gobbling up as much of the delicious foliage as they can.