What is the most well known monkey?

There's no single "most well-known" monkey, as it depends on what criteria you're using! Here are a few contenders and why they might be considered well-known:

* Chimpanzee: This highly intelligent ape is often featured in research and media, making it a familiar face for many. Their close evolutionary relationship to humans also fuels public interest.

* Gorilla: These majestic primates are known for their size and power, making them a popular subject of documentaries and conservation efforts.

* Orangutan: These arboreal apes are known for their intelligence and gentle nature, making them beloved by many. Their endangered status also brings them much attention.

* Macaque: This genus includes various species, some of which are very common in zoos and popular media. The iconic "monkey" image in many cultures is often based on macaques.

* Baboon: These ground-dwelling primates are known for their social complexity and intelligence. They are often featured in nature documentaries and are popular subjects of scientific study.

Ultimately, the "most well-known" monkey depends on your perspective and what you consider important. Each of these species has unique characteristics and deserves recognition for its role in the animal kingdom.