Chimpanzees are fascinating animals, but honestly, like any wild creature, they don’t always act kindly. You might wonder what sort of bad behaviors they show, and why they do those things.
Chimpanzees can get aggressive and show stress in ways like biting, hitting, pacing, or sometimes even hurting themselves.

These behaviors usually pop up when chimps feel threatened, bored, or stressed out. This happens a lot in captivity, where their environment just doesn’t give them what they need.
If you notice these signs, you’ll see that “bad behavior” isn’t just about being mean. It’s often the only way they know to cope with tough situations.
Want to know more about the kinds of troubling behaviors chimpanzees display and what causes them? Let’s get into the challenges these animals face in both the wild and in captivity.
Key Bad Behaviors Observed in Chimpanzees

You might notice chimpanzees acting in ways that seem aggressive or just plain odd. Sometimes these actions come from stress or boredom, especially in captivity.
Other behaviors come from their wild instincts. Some actions can even hurt themselves or others.
Aggressive and Violent Actions
Chimpanzees sometimes act aggressively toward each other. They’ll use loud screams, slap the ground, or bare their teeth to warn others or claim their space.
When fights break out, chimps might hit, bite, or chase one another. These conflicts can cause real injuries and, in some cases, even death.
People sometimes call these violent clashes “chimp wars.” That phrase really shows just how competitive and rough chimpanzee life can be.
Chimps can also direct aggression toward humans if they feel threatened or stressed. It’s a strong reminder that they’re wild animals—not pets.
Abnormal Behaviors in Captivity
In zoos or labs, chimps often start doing things you wouldn’t see in the wild. People call these abnormal behaviors.
You might see a chimp rocking back and forth, biting or hitting themselves, or making the same hand movement over and over. These are usually signs that the chimp feels stressed or bored.
Even with toys or companions, many captive chimps still show these behaviors. How much and what type of abnormal actions you see can vary a lot between individual chimps.
If you work with captive chimps, you should watch for these signs. They might mean the animal’s struggling with mental health or well-being.
More social contact and natural environments can help reduce these abnormal behaviors.
Coprophagy and Related Behaviors
Some chimps eat feces, which is called coprophagy. Sometimes they eat their own, sometimes another’s.
In the wild, they might pick seeds from feces now and then. But in captivity, this behavior can get more frequent.
Chimps might also play with or spread feces. Rarely, they’ll drink their own urine or touch urine streams.
These actions usually point to stress or a poor living situation. If you spot these behaviors, it’s probably a sign the chimp’s trying to cope with something negative.
Understanding coprophagy can help caretakers improve living spaces and mental health care for captive chimps. For more details, check out this study on chimpanzee behavior in zoos.
Underlying Causes and Implications of Negative Behaviors

Chimpanzees’ bad behaviors usually come from real challenges in their world. Things like their environment, health, and how people care for them play a big part in why they act out or seem upset.
Environmental Stress and Captivity
When chimps live in places that change too much or feel unsafe, they get stressed. That stress can make them fight more or do odd things like pacing or biting themselves.
If their space shrinks or food runs low, chimps compete harder and get more aggressive. In captivity, the problem can get worse.
Not enough space or stimulation makes chimps bored and upset. You’ll see strange habits like repetitive movements or self-harm.
The environment you give them really shapes how calm or stressed they feel.
Role of Parasites and Disease
Parasites and sickness hit chimps pretty hard. If a chimp has parasites, they might feel itchy, tired, or weak.
That often makes them grumpy or less interested in the group. Sick chimps sometimes avoid others and act more irritable.
Parasites spread fast when chimps are close together. Regular grooming keeps them healthier.
Without it, their behavior gets worse as they become more uncomfortable and stressed.
Animal Welfare Concerns
Looking after chimpanzees means giving them a steady, safe place to call home. If chimps don’t feel secure or get bored, they might start pulling their hair or even get into fights.
You can actually help cut down on these issues by making their living spaces better and paying attention to their social groups. When chimps have enough room, good food, and chances to hang out with each other, they usually seem happier and healthier.
Good welfare lets them relax and feel less stressed. That’s what leads to better behavior over time.
Want to know more about how their environment and health shape the way chimps act? Check out these details on bad behaviors in chimpanzees.