“…Plants containing tannins are astringent and unpalatable, an adaptation to deter consumption by herbivores [Janzen, 1974;McKey et al, 1978;Chapman and Chapman, 2002]. Some primate species or populations actively avoid potential food items containing moderate to high amounts of tannins, for example red colobus and black-and-white colobus at Kibale, Uganda [Oates, et al, 1977;Chapman and Chapman, 2002], and at Kakamega Forest, Kenya [Fashing et al, 2007], lesser bamboo lemurs and brown mouse lemurs [Ganzhorn, 1989] and vervets [Wrangham and Waterman, 1981], while others do not, e.g. howler monkeys [Milton, 1979;Milton et al, 1980], Verreaux's sifaka [Carrai et al, 2003;Yamashita, 2008], diademed sifaka and indri Mowry, 2003, 2006], greater dwarf lemurs and brown lemurs [Ganzhorn, 1989] and lowland gorillas [Remis and Kerr, 2002].…”