How smart are elephants? What the research shows

Last updated 8 October 2026

Elephants are among the most cognitively impressive animals studied. Controlled experiments show that at least some Asian elephants recognize themselves in a mirror, cooperate and wait for a partner to solve a task, and modify branches into tools, while wild African elephants tell dangerous and harmless people apart by voice and seem to call each other by name like calls. The evidence is strong but specific, so this page sticks to what each study actually found.

Self recognition in a mirror

The mirror mark test asks whether an animal will use its reflection to investigate a mark on its own body that it cannot otherwise see. For decades only humans and great apes passed. In 2006, Joshua Plotnik, Frans de Waal and Diana Reiss built an elephant proof mirror about 2.5 m square at the Bronx Zoo and tested three adult female Asian elephants. All three went through the classic stages: social responses, looking behind the mirror, repetitive testing movements, and then using the mirror to inspect their own mouths and bodies. One elephant, Happy, then repeatedly touched a visible painted mark on her head while ignoring an invisible sham mark on the other side, passing the test.

One out of three is a modest result, and the authors were careful to say so; many chimpanzees fail the test too. But it put elephants alongside apes and dolphins as the few animals with evidence of mirror self recognition.

Cooperation and understanding a partner

In a 2011 study in Thailand, Plotnik and colleagues adapted a classic cooperation test: two elephants had to pull the two ends of a single rope at the same time to bring a table of food within reach; if only one pulled, the rope slipped out. The elephants learned to pull together, waited up to 45 seconds for a delayed partner to arrive, and tended not to pull when their partner had no access to the rope. That suggests they understood that success depended on the partner, not just on pulling.

Tool use

Elephants use their trunks to wield objects, and they also make simple tools. Hart and colleagues reported in 2001 that captive Asian elephants used branches to swat flies and modified branches that were too large or awkward, for example by stripping side branches, to make better fly switches. Elephants also dig holes in dry riverbeds to reach water.

Telling people apart by voice

In Amboseli National Park, Kenya, Maasai herders sometimes clash with elephants over water and grazing, while Kamba farmers rarely threaten them. McComb and colleagues (2014) played recordings of men from both groups saying the same phrase in their own language. Elephant families were more likely to bunch defensively and sniff the air after hearing Maasai men than Kamba men, and reacted less to Maasai women and boys, who pose less danger. The response held even when the researchers altered the male voices to sound female, which suggests the elephants used more than pitch.

Name like calls

Pardo and colleagues (2024) recorded rumbles from wild African elephants in Kenya, noting who called and who the call was aimed at. A machine learning model could predict the intended receiver from the sound of the call more often than chance, and elephants approached and called back more quickly when played a call that had originally been addressed to them. Because the calls did not imitate the receiver's own voice, the authors suggest elephants may label each other in a way more similar to human names than the signature whistles of dolphins.

Memory and experience

Elephant memory is best demonstrated in social and survival knowledge. Families led by older matriarchs in Amboseli were better at distinguishing familiar from unfamiliar elephant calls and at judging which lion roars were most dangerous; the effect was strongest with matriarchs aged 60 or more (McComb and colleagues, 2001 and 2011). We look at this evidence, and at the drought study that showed how old knowledge can save calves, in Do elephants really never forget?

What sits behind it

The elephant brain weighs about 4 to 6 kg, and a 2014 count found roughly 257 billion neurons in an African elephant brain, about 98% of them in the cerebellum. The Smithsonian's National Zoo notes that much of elephant behavior is learned rather than instinctive, which fits with their long childhood and years of learning within the family. See elephant anatomy for more.

The limits of the evidence

Many headline studies involve a small number of elephants, and some have only been run once. Captive and wild elephants may behave differently. Some claims you may see online, such as elephants deliberately painting pictures or understanding human language, are not supported by peer reviewed evidence. TuskWise reports what studies show, not what we would like them to show.