Time sequences for feeding, chewing, walking and standing were measured for giraffe (Giraffa camelopardalis) in forest and savannah habitats in Tanzania, East Africa. The mean time sequence devoted to activities differed between the habitats types with shorter time sequence spend feeding and longer time sequences spend walking in the savannah compared to forest habitat. The proportion of total time spent walking was 6% in savannah and 18% in forest habitat. A greater proportion of total time was spent chewing in the savannah habitat compared to the forest while standing was of equal proportion in the two habitats. The probability for number of intervals as measured by Shannon´s entropy index, indicated fragmentation of activities that differed between the two habitats. The results are discussed in relation to predictions made from optimal foraging theory.