
Monkeys and apes are primates, which are mammals with forward-facing eyes and large brains relative to their body weight. Unlike other mammals, they have flat nails on their fingers and toes. While long nails can impede a monkey's ability to perform fine motor movements, such as picking off insects during grooming, they do not have access to human tools like nail clippers. Monkeys have been observed using a variety of methods to keep their nails trimmed, including biting them or simply waiting for them to grow long and break off on their own. A monkey's daily activities, such as climbing trees and fighting, likely help keep their nails short as well.
| Characteristics | Values |
|---|---|
| Monkeys' nail-cutting methods | Biting, waiting for nails to break off on their own, daily activities (e.g. climbing trees, fighting) |
| Purpose of nails | Protective barrier for vulnerable skin, aiding in picking up small objects, maintaining grip, performing fine motor movements |
| Drawbacks of long nails | Impeded finger movement, difficulty in picking insects during grooming |
| Nail-biting | Observed in primates, inherited trait from primates according to a source |
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What You'll Learn

Monkeys bite their nails, like other primates
Monkeys, like other primates, bite their nails to keep them short. This behaviour has been observed in chimpanzees, for example, although some individual chimps prefer to leave their nails alone. Chimpanzees also bite their toenails. Nail biting is an inherited trait among primates, known as onychophagia.
While long nails can impede a monkey's ability to pick off insects during grooming, not all monkeys are concerned with maintaining short nails. Some monkeys in captivity use human tools like nail clippers, but wild monkeys do not have access to such amenities. Instead, they may simply wait for their nails to grow too long and break off on their own. A monkey's daily activities, such as climbing trees, harvesting bamboo shoots, and fighting with rivals, can also help to keep their nails trimmed.
Nails are protective barriers for the vulnerable skin beneath, but they also serve other purposes. Fingernails help primates, including monkeys, pick up small objects, maintain a tight grip, and perform fine motor movements. Therefore, if a monkey's nails grow too long and become claw-like, they can actually become less useful.
While nail biting may be considered abnormal in humans, it is a normal behaviour in many primates. This is because primates have flat nails on their fingers and toes, whereas other mammals have claws or hooves. Primates use their nails for scratching itches and performing fine tasks like typing, so keeping their nails short through biting or other methods is important for their daily functioning.
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Captive monkeys use human tools
Captive monkeys have been observed using human tools to trim their nails. Monkeys and apes have been known to use a variety of methods to keep their nails trimmed, although there is no single definitive habit that unites non-human primates. This is because the way they choose to groom their nails is a matter of personal preference.
Some monkeys and apes bite their nails, while others wait for their nails to grow too long and break off on their own. A monkey's daily activities, such as climbing trees and getting into fights with rivals, can also help keep their nails short.
However, some captive monkeys have been known to use human tools, such as nail clippers, to trim their nails. In one example, a chimpanzee in a zoo was observed using nail clippers to cut its nails. It is speculated that the chimp learned this behaviour by observing zookeepers trimming its nails.
The use of human tools by captive monkeys is an interesting example of their intelligence and adaptability. While it is not known exactly how these monkeys learn to use tools, it is possible that they observe and imitate human behaviour. This behaviour may also be a result of the more complex social networks and increased social grooming that primates engage in, as opposed to more solitary species that have re-evolved grooming claws.
Overall, the way that monkeys and apes choose to groom their nails is a matter of individual preference and can vary depending on their living situation and access to human tools.
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Nails break off from daily activities
Monkeys and other primates have nails that continuously grow and require trimming. While some primates bite their nails, others simply wait for their nails to grow too long and break off on their own during daily activities.
Monkeys engage in various physical activities that can lead to nail breakage. Climbing trees, harvesting bamboo shoots, and fighting with rivals are all actions that can result in nails breaking off. These activities provide a natural way to keep their nails trimmed and maintained.
The nails of primates, including monkeys, serve important functions. Fingernails and toenails act as protective barriers for the sensitive skin beneath. They also aid in picking up small objects, maintaining a firm grip, and performing precise motor movements. For example, long nails can interfere with a monkey's ability to pick off insects during grooming.
Nail breakage during daily activities can be a natural form of nail maintenance for monkeys. However, it is worth noting that nail breakage may be painful if the nails break too short. Therefore, some monkeys may choose to bite their nails to keep them trimmed.
Ultimately, the method a monkey chooses for nail maintenance is a matter of personal preference. Some may prefer to bite their nails, while others may allow their nails to grow and break off during their active lifestyles.
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Long nails are less useful for monkeys
Monkeys have flat nails on their fingers and toes, and some primates have claws in addition to a flat nail on their big toe. Nails act as a protective barrier for the skin, but they also help primates, including monkeys, pick up small objects, maintain a grip, and perform fine motor movements.
Monkeys do not have access to manicures, pedicures, or nail clippers, so they have to find other ways to keep their nails trimmed. Monkeys have been observed using a variety of methods to do this, including biting their nails. A monkey's daily activities, such as climbing trees and getting into fights with rivals, also help keep their nails short.
While some monkeys may not mind having long nails, it is generally less practical for them. Monkeys are active animals, and their nails will break off from regular use. Therefore, it is not surprising that monkeys have evolved to have flat nails that are well-suited for their lifestyle and activities.
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Monkeys don't always trim their nails
Monkeys have been known to bite their nails, just like humans do. In fact, nail biting or onychophagia is an inherited trait among primates. However, not all monkeys bite their nails, and it is not species-specific. For example, while chimpanzees usually bite their nails, some prefer to leave them alone.
Monkeys' nails may also break off on their own due to regular use. A monkey's daily activities, such as climbing trees, harvesting bamboo shoots, and fighting with rivals, can easily result in breaking a nail or two. Therefore, while monkeys may occasionally trim their nails by biting them or waiting for them to break off, they don't always need to actively trim them.
It is worth noting that, just like in humans, long nails in monkeys can impede normal finger movements. However, this doesn't seem to bother all monkeys, and some may simply let their nails grow long. In summary, while monkeys do have methods for trimming their nails, it is not a universal practice, and some monkeys may prefer to simply let their nails grow.
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Frequently asked questions
Monkeys and other primates have been observed using a variety of methods to keep their nails trimmed. Some bite their nails, while others simply wait for them to grow long and break off on their own or during daily activities like climbing trees and fighting.
Monkey nails, like human nails, continuously grow and need to be replaced due to wear. If they grow too long, they can impede a monkey's normal finger movements and abilities to perform fine tasks like picking off insects during grooming.
No, it is not species-specific. Some monkeys prefer to bite their nails, while others don't. For example, chimpanzees usually bite their nails, but some prefer to leave them alone.











































