Chimpanzees: They are arguably the most famous tool-using primates. They use sticks to fish for termites and ants, rocks to crack nuts, leaves as sponges to soak up water, and even use tools to modify other tools.
Bonobos: Similar to chimpanzees, bonobos use sticks to fish for termites and ants. They also use leaves to clean themselves, and they have been observed using stones to break open fruits.
Orangutans: They demonstrate complex tool use in the wild, using sticks to extract honey from beehives, leaves to scoop up water, and branches to build nests. They also use tools to modify other tools, such as stripping leaves off a branch to use as a rake.
Capuchin monkeys: They are known for their dexterity and intelligence. They use rocks to crack open nuts and shellfish, and they have even been observed using stones as hammers and anvils.
Macaques: Several macaque species use tools. For example, the Japanese macaques are known for their "washing" behavior, using stones to wash sweet potatoes before eating them.
Gorillas: While not as frequent as chimpanzees or orangutans, gorillas have been observed using tools. They use sticks to probe for food in holes and to test the depth of water before crossing streams.
Proboscis monkeys: These monkeys use tools to feed on mangrove leaves. They use their tails to hold down leaves while they eat, and they sometimes use sticks to reach leaves that are out of reach.
Other primates: Many other primate species have been observed using tools, though not as extensively as the species mentioned above. These include baboons, vervet monkeys, and even some smaller monkey species.
It's important to note that tool use can vary between populations of the same species, and even within a single group of individuals. The extent and complexity of tool use are influenced by factors such as the environment, social structure, and individual learning.