
Crab Facts: Claws, Shells & Secret Behaviors
Crabs are crustaceans found on every continent with over 7,000 species. Discover why crabs walk sideways, trade shells, and grow claws stronger than jaws.

Chimpanzees share 98.8% of human DNA and use tools, communicate, and form complex societies. Learn about chimp intelligence, behavior, and habitats.
Chimpanzees are our closest living relatives sharing ninety eight point eight percent of our DNA. These highly intelligent great apes use tools, fashion spears to hunt, remember locations of hundreds of fruit trees, and outperform human adults in memory tasks.
Chimpanzees display remarkable intelligence that rivals and sometimes exceeds that of young human children. They recognize themselves in mirrors, an ability shared by very few animals. Young chimpanzees outperform human adults in some memory tasks, particularly short term recall of numbers and spatial positions.
Chimpanzees are among the most accomplished tool users in the animal kingdom. They strip leaves from twigs to create fishing probes for extracting termites from mounds. They use stones as hammers and anvils to crack open hard nuts.
Chimpanzees live in complex hierarchical societies called communities containing twenty to one hundred fifty individuals. Community life is governed by a dominance hierarchy headed by an alpha male. Alpha males achieve their position through aggression, coalition building, and strategic alliances.
Chimpanzees communicate through vocalizations, gestures, and facial expressions. They produce over thirty distinct vocalizations including pant hoots, screams, barks, and grunts. Each call conveys specific information about food, danger, or social interactions.
Chimpanzees are omnivores with fruit comprising about half their diet. They also eat leaves, flowers, seeds, bark, honey, and insects. Male chimpanzees cooperate in organized hunts that demonstrate planning and role assignment.
Female chimpanzees reach sexual maturity around ten to thirteen years old. They advertise fertility through large pink swellings on their hindquarters that peak during ovulation. After an eight month gestation, females give birth to a single infant.
Jane Goodall's 1960 observation of chimps using tools revolutionized understanding of human uniqueness.
Until Goodall's work, scientists defined humans as the only tool making animals.
Chimpanzees were used extensively in medical and space research, including NASA's early space flights.
The recognition of chimp personhood is now being debated in courts around the world.
Research proved chimpanzees have distinct cultural traditions that vary between communities.
Studies found chimps can learn sign language and communicate abstract concepts.
Scientists observed chimps self medicating with specific plants when sick.
Long term research revealed chimp warfare is a natural behavior, not caused by human provisioning.
Chimpanzees became symbols of humanity's connection to nature and evolution.
Jane Goodall became one of the most famous scientists in history through her chimp research.
Chimps in entertainment faced backlash as people learned about their suffering and intelligence.
The chimp genome project changed how we understand human evolution and disease.
Before Jane Goodall's research, chimpanzees were considered simple animals incapable of tool use, culture, or complex emotion. Scientists viewed humans as completely separate from other animals, defined by our unique ability to make tools.
Research revealed chimps as our closest relatives who share our capacity for culture, politics, warfare, and emotion. The line between human and animal blurred. Former research chimps now live in sanctuaries, and wild populations face extinction. Understanding chimps means understanding ourselves.
Chimpanzees share 98.8 percent of human DNA, making them our closest living relatives in the animal kingdom
They are about 1.5 times stronger than humans and can easily overpower adult humans despite being smaller
Chimpanzees fashion spears from branches to hunt small mammals hiding in tree cavities
Different chimpanzee communities have unique tool use traditions representing animal culture passed down through generations
Young chimpanzees outperform human adults in short term memory tasks involving numbers and spatial positions
Female chimpanzees advertise fertility with large pink swellings that can increase to several times normal size
Chimpanzee populations have declined from millions to fewer than 300,000 in the wild
Bushmeat hunting and habitat destruction continue to reduce chimp numbers
Medical testing on chimps has largely ended due to ethical concerns and genetic research alternatives
Chimp sanctuaries care for hundreds of retired research and entertainment chimps
Understanding chimp diseases helps prepare for potential human outbreaks
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Chimpanzees have been observed teaching sign language to their offspring without human intervention.
Chimps mourn their dead, sometimes sitting with bodies for days and showing signs of grief.
Different chimp communities have different cultures, including food preferences, tool styles, and greeting behaviors.
Chimps can beat humans at certain memory tests, briefly memorizing number sequences faster than any human.
Male chimps form political coalitions, and alpha status depends more on alliances than physical strength.
Chimps laugh when tickled, and the sound is recognizably similar to human laughter.
Humans and chimpanzees share 98.8 percent of their DNA, making chimps our closest living relatives. Despite this genetic similarity, small differences result in significant physical and cognitive distinctions. Both species diverged from a common ancestor approximately 6 to 7 million years ago.
This article is reviewed by the Pagefacts team.
Editorial Approach:
This article explores our closest living relatives who share nearly 99% of our DNA, wage war like humans, mourn their dead, and pass cultural traditions to their children, challenging what it means to be human.
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