Red ape

In Borneo the red ape inhabits the swampy forest-tract at the foot of the mountains.

Source: wiktionary

Instead the red apes had fallen back farther into the forest and I could judge what effect this would have on the reproductive activity of the population from my Bornean findings

Source: wiktionary

The description of the morphological similarities between humans and various species of ape forms the central theme of The Red Ape, with the emphasis very much on the close relationship of orang-utans (the red apes) to humans.

Source: wiktionary

Then a biologist named Morris goodman published a few papers, based also on immunological comparisons, in which he noted strong similarities among the blood protiens of chimpanzees, gorillas, and humans. On these molecular grounds, Goodman argued, the genera Pan and Gorilla belonged with Homo in the family Hominidae, rather than with the orangutan in Pongidae. The three African genera of apes, as Goodman saw them, are more similar to each other than any of them was to the red ape of Borneo and Sumatra.

Source: wiktionary