Bili Ape

Bili Ape or Bondo Mystery Ape are giant chimpanzees that appear to live in remote east Africa, where much evidence points to their existence, including photos, footprints and even ground nests. In 1902, a man reported a primate species that was about 6 feet tall, though originally only considered a cryptid for 102 more years until a live specimen was found in 2003 (though a skeleton was found in 1996). They appear to act more like gorillas rather then chimpanzees, when first reported, it was thought it may have been a chimpanzee-gorilla hybrid, but now it is known to be a large species of chimpanzee.

Appearance
Bili apes have a very flat face, a wide muzzle and their brow-ridge runs straight across and overhangs. They seem to turn grey very early in life, but instead of turning grey-black like a gorilla, they turn grey all over. They have very flat faces, wide muzzles, brow-ridges running straight across and overhanging, uniform gray fur independently of age and gender, which suggests that graying takes place early in life-opposed to all known gorilla species, where only males gray as they age (graying is only restricted to their backs). The Bili Ape has been reported to walk bipedal at times, with the looks of a giant chimpanzee. Later observations by scientists, however, reveal that they are knuckle-walkers like other chimpanzees that only occasionally walk upright. Their footprints, which range from 28 to 34 centimeters, are longer than the largest common chimp and gorilla footprints, which average 26 cm and 29 cm, respectively. A team of scientists has, in a year and a half of study, found no footprints longer than 30 cm, and most have been smaller.

Behavior
In some ways, the apes behave more like gorillas than chimpanzees. For example, they build ground nests as gorillas do, using interwoven branches and/or saplings, bent down into a central bowl. However, they frequently nest in the trees as well. Often ground nests will be found beneath or in proximity to tree nests. Their diet is also decidedly chimpanzee-like, consisting mainly of fruits (fruiting trees such as Strangler Figs are visited often). Behavior toward humans have baffled and intrigued scientists. There is little to no aggression, yet no fear either. "Gorilla males will always charge when they encounter a hunter, but there were no stories like that," about the Bili Apes, according to Ammann. Instead, they would come face-to-face with their human cousins, stare intently in half-recognition, then slide away quietly.