Woolly mammoth
Mammuthus primigenius (Blumenbach, 1799)
The woolly mammoth was a cold-adapted elephant relative that died out across its mainland range around 10,000 years ago, with a final isolated population surviving on Wrangel Island in the Arctic Ocean until roughly 4,000 years ago — meaning mammoths were still alive when the Great Pyramid of Giza was built.
Updated 25 July 2026
- Closest living relative
- Asian elephant (Elephas maximus)
- Shoulder height
- About 2.7–3.4 m
- Weight
- Roughly 6 tonnes
- Tusk length
- Up to 4.2 m in large males
- Mainland extinction
- Around 10,000 years ago
- Final population
- Wrangel Island, until roughly 4,000 years ago
The woolly mammoth is the animal most people picture when they think of the ice age, and the one whose extinction is most often described wrongly. It did not vanish in a single dramatic event. Mainland populations declined over thousands of years as the mammoth steppe — a vast, dry, grassy ecosystem that once stretched from Spain to Canada — was replaced by wet tundra and forest as the climate warmed. Human hunting pushed already-shrinking populations further. A remnant survived on Wrangel Island until around 2000 BCE, long enough to overlap with ancient Egypt.
Key facts at a glance
- Woolly mammoths are more closely related to Asian elephants than Asian elephants are to African elephants — the mammoth and Asian elephant lineages split around 6 million years ago.
- Mainland populations died out around 10,000 years ago as the mammoth steppe collapsed; the Wrangel Island population survived until roughly 4,000 years ago.
- Mammoths were still alive when the Great Pyramid of Giza was completed, around 2560 BCE — one of the most reliably surprising facts in palaeontology.
- Genomic work on the Wrangel population found an accumulation of harmful mutations, a phenomenon known as genomic meltdown, consistent with long-term inbreeding in a tiny isolated group.
- The debate over climate versus hunting is largely settled as "both": climate change fragmented and shrank the populations, and hunting pressure on those fragments removed the capacity to recover.
- Permafrost preservation makes the mammoth one of the best-sequenced extinct animals, which is why it dominates de-extinction discussion.
What killed the woolly mammoth?
The long-running argument between climate change and human hunting has resolved into a combined answer, with the balance differing by region. As the last glacial period ended roughly 12,000 years ago, warming and increased precipitation converted the mammoth steppe — a dry, cold, highly productive grassland — into wet tundra, bog and expanding forest. That ecosystem could not support herds of six-tonne grazers, and mammoth range fragmented into shrinking pockets. Human hunters were present across much of that range and killed mammoths for meat, hide and ivory. Modelling work indicates hunting alone could not have caused the extinction, and climate alone would likely have left refugial populations, but the combination was decisive: climate created small isolated groups, and predation on small isolated groups prevents recovery. The final Wrangel population then faced a third problem, being too genetically depleted to persist even without either pressure.
The Wrangel Island endgame
A population of woolly mammoths survived on Wrangel Island, off the northeastern Siberian coast, for around 6,000 years after their mainland relatives died out. Sea-level rise had cut the island off, isolating a small founder group. Genomic analysis of these animals found an accumulation of deleterious mutations that natural selection in a tiny population could not purge — reduced olfactory receptors, altered urinary proteins associated with mate choice, and a translucent satin coat defect. Researchers have described the pattern as genomic meltdown. A 2024 analysis complicated the simple story by showing the population was genetically stable for most of its 6,000 years, suggesting the final disappearance may have been abrupt — possibly a disease event or a single bad season — rather than a slow genetic decline. Either way, the island mammoths are the clearest available case study in what happens to a species reduced to one small isolated group, which is the position a great many living species now occupy.
Should the woolly mammoth be brought back?
The mammoth is the flagship de-extinction target because permafrost has preserved usable genetic material, the genome is well sequenced, and a close living relative exists in the Asian elephant. The stated ecological argument is that restoring large grazers to the Arctic could help maintain grassland, which reflects more sunlight than forest and may slow permafrost thaw. The objections are substantial. The product would be a genetically modified Asian elephant carrying mammoth cold-adaptation genes, not a mammoth. Asian elephants are themselves Endangered, and the process would involve experimental reproductive procedures on a threatened species. Elephants are long-lived, highly social animals whose calves learn behaviour from herds that would not exist. And the funding involved could protect very large areas of habitat for elephants that are alive now. The scientific interest is real; the conservation case is contested, and this site's position is that living elephants have the stronger claim on limited money.
Where it lived
Northern Eurasia and North America — the mammoth steppe
What caused it
- 1 Rapid warming at the end of the last ice age destroying the mammoth steppe
- 2 Human hunting pressure on already-fragmented populations
- 3 Genetic collapse in the final isolated island populations
What this extinction teaches
A species does not need to be hunted to zero to be finished. Habitat change that fragments a population into small isolated groups does most of the work, and the final groups then fail from inbreeding and chance. That is the exact process now running on forest elephants, tigers and orangutans as their ranges break into islands.
Still here — for now
Still facing the same pressure: Asian elephant
The mammoth's closest living relative, now down to roughly 48,000–52,000 wild animals in fragmented pockets across 13 countries. The habitat fragmentation that finished the mammoth is the primary threat to the Asian elephant today — and this one can still be prevented.
IUCN status: Endangered
Did you know
Mammoth tusks grew continuously and recorded growth in daily layers, so a single tusk preserves a life history — one 17,000-year-old Alaskan male's tusk showed he travelled far enough in his 28 years to have circled the Earth nearly twice.