Do Elephants Really Never Forget? Elephant Memory Facts

Where does the saying come from?

“An elephant never forgets” was already a familiar English saying by the early 20th century. It grew out of much older stories about elephants remembering kindness or injury, including accounts from Roman writers and from mahouts in Asia who worked with the same animals for decades.

Like many proverbs, it exaggerates. No animal remembers everything. But modern research suggests that this one has a solid core of truth, especially when it comes to remembering places, other elephants and dangers.

The elephant brain

Elephants have the largest brain of any land animal, weighing roughly 4.5–5.5 kg (10–12 lb). Relative to body size it is smaller than a human brain, but it is packed with neurons and has a large, folded cortex and well-developed temporal lobes, the regions linked to memory in mammals.

Elephants also live long and learn slowly. A calf depends on its mother for years, and females spend their whole lives in family groups. That long childhood gives plenty of time to learn routes, food plants, water holes and the faces, voices and smells of relatives.

Matriarchs: the memory of the herd

In both the African bush elephant and the Asian elephant, older females play a key role, and in African bush elephants a family is typically led by its oldest female, the matriarch.

Long-term research in Amboseli National Park, Kenya, tested this by playing recorded contact calls to elephant families. A 2001 study in Science found that families led by older matriarchs were better at telling the calls of familiar elephants from those of strangers. Each adult female seemed to know the calls of around 100 other adult females. Families with older leaders also had better breeding success.

A later study in the same park played recordings of lions. Families with older matriarchs reacted most strongly to the roars of male lions, which are more dangerous to elephants than females, and bunched together defensively. Families with younger leaders often misjudged the threat.

Remembering water in a drought

The most striking example comes from Tarangire National Park in Tanzania. During a severe drought in 1993, about 20% of the elephant calves born that year died. Two of the three families that left the park in search of water and food lost fewer calves. These families were led by matriarchs old enough to have lived through a similar drought in the late 1950s and early 1960s, roughly 35 years earlier. The researchers suggested that memories of that earlier crisis guided the groups to safety.

Do elephants remember people?

Evidence from Kenya shows that wild elephants keep careful track of people. Maasai men have at times speared elephants, while Kamba farmers rarely threaten them. In experiments, elephants in Amboseli reacted with more fear to clothing that had been worn by Maasai men than to clothes worn by Kamba men, and they reacted aggressively to red cloth, the color Maasai traditionally wear.

Follow-up work with recorded voices found that the elephants could distinguish the voices of Maasai men from those of Maasai women and boys and from Kamba men, saying the same phrase in their own language. They responded defensively mainly to adult Maasai men, the group most likely to harm them.

There are also many anecdotes from zoos and sanctuaries of elephants greeting keepers or companions after years apart. One widely reported case is that of two Asian elephants, Shirley and Jenny, who seemed to recognize each other at a Tennessee sanctuary in 1999, more than 20 years after they had been in the same circus. Stories like this are moving but are not controlled experiments.

Other signs of intelligence

Memory is only part of what makes elephants remarkable:

• Self-recognition. In 2006, an Asian elephant named Happy at the Bronx Zoo passed a mirror test, repeatedly touching an X painted on her head that she could see only in the mirror. Only a few kinds of animals, such as great apes, dolphins and Eurasian magpies, have passed similar tests.
• Keeping track of family. African elephants seem to know where out-of-sight relatives are, partly from the smell of their urine along the trail.
• Communication. Elephants exchange low-frequency rumbles over several kilometers and recognize individual voices. See How do elephants communicate? for more.
• Tool use. They swat flies with branches, scratch with sticks and plug water holes with chewed bark.

Do elephants mourn?

Elephants show strong, consistent interest in their dead. African elephants approach and touch elephant skulls and tusks far more than the bones of other animals, gently feeling them with their trunks and feet. Families have been seen standing over dying or dead companions and returning to carcasses for days.

Asian elephants show similar behavior. A 2022 study of online videos documented Asian elephant mothers carrying the bodies of dead calves, sometimes for days. Researchers are careful not to claim that elephants feel grief exactly as humans do, but the behavior suggests that they recognize death and respond strongly to the loss of family members.

So, do elephants really never forget?

Elephants certainly forget some things, as all animals do, and memory varies between individuals. But the science supports the spirit of the saying. Elephants can remember places, routes, voices and threats for decades, and older matriarchs act as living libraries for their families.

This is also why poaching and culling can be so damaging. When the oldest females are killed, families lose their most experienced members, and with them knowledge that can take decades to rebuild.