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1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsNo one can identify a single species that would take over Earth if humans became extinct. The answer depends on what “take over” means: becoming more numerous, shaping ecosystems, occupying abandoned human spaces, or developing human-like technology. Those are different outcomes, and each points to different possibilities.
What does “take over” mean?
“Dominance” is not one scientific measure. It might refer to abundance, biomass, geographic spread or influence on ecosystems. It might also mean occupying human-built environments—or manipulating the world with tools, language and technology. Those last measures are often human-centered ways of defining success.
By broad measures such as abundance, biomass and planetary distribution, bacteria can already be considered dominant. If the question instead means “Which animal might build a technological civilization like ours?”, there is no reliable way to name a successor.
What could happen soon after human extinction?
The first beneficiaries would depend on how humans disappeared and what resources remained. A pandemic, abrupt catastrophe and slower decline would not affect every species equally. In a near-term scenario, animals able to exploit existing food sources and human settlements could gain an advantage without evolving any new abilities.
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Baboons: opportunists in abandoned settlements
BBC Science Focus offers baboons scavenging in settlements and feeding on food or livestock as one possible early scenario. Their ability to exploit those resources might help their numbers locally. That is an illustration of short-term opportunity, not evidence that baboons would eventually dominate the planet. BBC Science Focus
Which animals have traits that might matter over the long term?
Over thousands or millions of years, existing abilities could help some animals occupy changing niches. But having a useful trait today does not establish that a species will evolve human-like intelligence, technology or global influence.
| Candidate | Potential advantage | Important constraint |
|---|---|---|
| Other apes | Opposable thumbs, social lives and existing tool use could support manipulation and learning. | Human-like tools could take hundreds of thousands or millions of years to develop, according to Live Science. A catastrophe that kills humans could also harm apes. |
| Crows, ravens and parrots | Cognitive abilities and ways to manipulate objects could help them exploit particular niches. | These traits do not show that birds would build human-style cities or a technological civilization. |
| Ants and termites | Social organization and adaptability; examples include fungal farming by some ants and vibration-based communication in termites. | Colony-level coordination is not the same as human intelligence in an individual insect, and it does not predict a human-like society. |
| Octopuses and other cephalopods | Octopuses can learn and manipulate objects. Jennifer Mather, a cephalopod intelligence researcher, described intelligence as “modifying your behavior as a result of influence from your environment.” | Aquatic physiology constrains a transition to land. Fire, electricity, metal refining and machine-building would pose further obstacles; a land transition would be an immense evolutionary undertaking. |
The candidate traits and limits in this table are discussed in Live Science’s overview of possible successors. They are not rankings established by experiments on a post-human Earth.
Why can’t evolution point to a clear successor?
Evolution has no built-in destination. A trait spreads when it helps organisms survive and reproduce in particular conditions—not because it is a step toward human intelligence. As Luc Bussiere, a lecturer at the University of Stirling, wrote: “Evolution does not favour intelligence for its own sake, but only if it leads to higher survival and reproductive success.” Bussiere’s essay, published by The Conversation in 2016
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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →The longer the forecast, the more it depends on unpredictable environmental shifts, chance mutations and extinctions. The cause of human extinction would also shape which organisms survive and what habitats or resources remain. Bussiere framed a hypothetical future some 50 million years away as a thought experiment, not a forecast, and concluded: “The answer is both dissatisfying and thrilling all at once: while we can be reasonably confident that it won’t be a talking chimpanzee, we otherwise have no idea what it will look like.”
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Could another species become as intelligent as humans?
It is possible to imagine another lineage evolving greater intelligence, but no source here establishes that it will happen or identifies which lineage would do so. Intelligence is only one possible adaptation among many; a species could flourish through social coordination, efficient reproduction or success in a particular habitat without developing human-like technology.
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Nor does a present-day ability to use tools, learn or organize socially show that a species is on a path to human civilization. The available candidate scenarios describe possible strengths and obstacles, not a sequence of evolutionary steps with a known outcome.
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