* Difficult to count: Apes live in remote and dense forests, making it very hard to get an accurate count.
* Constantly changing populations: Ape populations fluctuate due to factors like habitat loss, poaching, disease, and changes in food availability.
* Different definitions of "ape": Some people include all great apes (gorillas, chimpanzees, bonobos, orangutans, and humans), while others only consider the four non-human great apes.
However, we can estimate the population of non-human great apes based on conservation efforts and research:
* Gorillas: Approximately 100,000 individuals.
* Chimpanzees: Estimated to be around 172,000-300,000.
* Bonobos: Their population is estimated at around 50,000.
* Orangutans: Around 14,600 Sumatran orangutans and 54,800 Bornean orangutans are left in the wild.
Remember, these numbers are estimates and can vary. The conservation status of all ape species is listed as "Endangered" or "Critically Endangered" due to threats to their survival.