Their habitat is the tropical and subtropical rainforests from northeast India to Indonesia and north to southern China, including the islands of Sumatra, Borneo and Java. Gibbons are social animals. Strongly territorial, gibbons defend their boundaries with vigorous visual and vocal displays. When the male child becomes mature, the father will run the child off the territory. If it is a female gibbon the mother will be the one to run it off. The vocal aspect, which can often be heard from far distances, comprise of a duet between a mated pair. Gibbon species include the Siamang, Hoolock, and the White-handed or Lar Gibbons that reside on Jungle Island.

Lemurs use their sense of smell to communicate with each other. Their life span in the wild is approximately 32- 36 years for the Black and White and Red Ruffed lemurs. The Ruffed lemurs are predominantly frugivorous, (animals that eat mainly fruit), in fact the most frugivorous of all the lemurs. Feeding time is spent between 75-90% on fruit and the rest on a small amount of leaves and flowers. The Ruffed lemurs are diurnal, inhabiting both the ground (terrestrial) and the trees (arboreal), and form troops of up to 25 individuals. Social hierarchies are determined by sex.

Females have a distinct hierarchy but males have a non-linear hierarchy with occasional to frequent rank reversals; females socially dominate males in all circumstances, including feeding priority. Most lemurs are listed as endangered or threatened species. Many species have gone extinct in the last centuries, mainly due to habitat destruction.