The large herbivore
In South American forests, the major herbivores are not hoofed animals but rodents such as the paca (Cuniculus paca) and agouti (e.g. Dasyprocta leporina). They have body forms, shy habits and a solitary life style. Browsing on the taller shrubs and saplings requires greater stature and most tropical forests have some form of large herbivore, which are secretative, generally uncommon and difficult to observe. In Malaya and South America, there are nocturnaltapirs (Tapirus indicus and Tapirus terrestris), which belongs to the order Perissodactyla (odd-toed ungulates). In parts of Southeast Asia, another odd-toed ungulate occurs, the Sumatran Rhinoceros (Didermocerus sumatrensis), with a slightly hairy hide. In the Central African basin forests occurs the even-toed ungulate called the Okapi (Okapia johnstoni; order Artiodactyla), and is a short-necked primitive cousin of the Giraffe (Giraffa camelopardalis). It is an amazing fact that so large and conspicuously marked a creature as the Okapi was unknown to science until 1901.