Cognition

As one Nile crocodile rests, another perks up near a river in Tanzania.

Nile Crocodiles Recognize and React to the Sound of Crying Babies

The reptiles may be aware that primate infants are in trouble—and an easy meal

A magpie nest in Antwerp, Belgium, made with anti-bird spikes

Crows and Magpies Snatch Anti-Bird Spikes to Build Their Nests

Birds in Europe are prying up the metal barbs, meant to repel them from roosting on buildings, and using the devices as nesting material

Scientists have long debated how we perceive the absence of sound waves hitting our ears.

We Can Hear Silence Like a Sound, Scientists Say

In a study, participants were tricked by "silence illusions" in the same way that illusions with sound fool the brain

Roughly six million Americans have Alzheimer's disease.

FDA Fully Approves First Drug Meant to Slow Alzheimer's Disease

The drug showed promise in an 18-month clinical trial, but some experts have expressed concerns about its safety and cost

Landscape of Saudi Arabia where some of the to-scale engravings were found.

Archaeologists Discover the Oldest Known Blueprints

The Stone Age engravings are to-scale depictions of desert kites, massive stone structures used by hunters to capture animals

In a recent study, researchers examined 40 videos of great apes spinning on ropes and calculated their average rotational velocity.

Great Apes Love to Spin Around—Here's Why

A recent study suggests that apes, like humans, seek out altered mental states

A cockatoo uses a sharp stick to poke through a membrane before using a scoop to fish out the cashew inside the box.

Like Humans and Chimps, Cockatoos Can Use a Set of Tools to Get a Meal

In lab experiments, the brainy birds carried a stick and scooped with them to get at cashews kept in a box

Previous research has demonstrated that crows can make tools and recognize faces.

Scientists Suggest a New Layer to Crows’ Cognitive Complexity

The birds may be able to grasp a pattern-forming concept once thought to be unique to humans

Researchers want to recreate the smells of civilizations like ancient Egypt. 

Scientists Recreate Cleopatra's Favorite Perfume

Reconstructing the scentscapes of bygone civilizations is anything but simple

Over the span of 15 months, scientists cataloged 76 instances of chimps using insects on their wounds and the wounds of others. 

Chimpanzees Appear to Use Insects to Treat Their Wounds

In a first, chimps in Gabon were seen applying insects to sores on themselves—and others, a possible show of empathy

Infants exposed to their mother’s scent during interactions with strangers were more relaxed, smiled more and made more eye contact.

Smelling Moms' Scent May Help Infants Bond With Strangers

Even if the mother isn’t around, traces of her body odor on clothing may increase a child’s trust and comfort with others

A new study from Japanese researchers found that a stationary cat can track its owner's location by their voice. 

Your Cat May Know Where You Are Even When They Can't See You

New research suggests domesticated cats keep a 'mental map' of their owner's location, an ability previously unknown in felines

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Why Do Dogs Tilt Their Heads? New Study Offers Clues

The adorable behavior may be a sign of concentration and memory recall

Female octopuses were far more likely than males to 'throw' objects at others.

Female Octopuses Throw Things at Male Harassers

Scientists observed common Sydney octopuses launching shells and silt at particularly annoying individuals

A study of two dozen common cuttlefish reveals they can recall specific details regardless of age.

Unlike Humans, Cuttlefish Have Sharp Memories Even in Old Age

The cephalopods remember when, where and what they ate until days before death

Before engaging in social behaviors like grooming, bonobos (pictured) employed a "hello" greeting during 90 percent of observed interactions and bid their peers farewell 92 percent of the time.

Bonobos and Chimps Appear to Have 'Hello' and 'Goodbye' Greetings

Like humans, these apes share salutations to start and end interactions

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