What Happens to the Animals If Everyone Goes Vegan?
It is one of the favourite questions thrown at vegans.
“What would happen to all the animals?”
It is usually presented like a trap. As if the person asking has just uncovered the fatal flaw in animal rights. As if vegans have been so busy opposing exploitation that we forgot cows, pigs, chickens, sheep, goats, turkeys and ducks exist. But the question does not expose a problem with veganism.
It exposes a problem with how people think about animals.
Because the animals people are suddenly so worried about are not sitting in fields because nature made too many of them. They are not a natural population. They are not a free-living species who would be abandoned by the collapse of Sunday roasts and cheese sandwiches.
They are here in these numbers because humans breed them into existence.
Farmed animals are not accidentally here. They are manufactured by demand. They exist in vast numbers because there is profit in their bodies, milk, eggs, skin, wool, labour and reproductive systems. Their births are planned. Their pregnancies are managed. Their bodies are counted as units. Their deaths are costed into business models.
So when someone asks, “What would happen to all the animals if everyone went vegan?” the first answer is simple. We would stop breeding so many of them.
There would not be one dramatic morning where the world wakes up vegan and billions of animals are suddenly wandering motorways. That is not how social change works. That is not how agriculture works. That is not how supply and demand works.
Industries expand when demand rises. They contract when demand falls.
If demand for animal products fell, farmers would breed fewer animals. Hatcheries would hatch fewer chicks. Fewer cows would be forced into pregnancies. Fewer pigs would be born into sheds. Fewer lambs would be brought into a system that already knows the date of their death before they are old enough to understand the world around them. That is not chaos.
That is the beginning of abolition.
The current number of farmed animals is not a moral argument for keeping the system alive. It is evidence of the scale of the system. People look at the billions and treat them as a problem veganism must solve, when the billions are the result of non-vegan demand. You cannot create a crisis, then demand credit for maintaining it.
This is especially clear when people act as if breeding animals for slaughter is a form of protection.
“They wouldn’t exist without us.”
Yes. That is the point.
A being created for exploitation is not being given a gift. They are being entered into a contract they never agreed to. Their existence is made conditional on their usefulness. They are allowed to be born because someone intends to take something from them. That is not care.
That is ownership.
People do this strange little moral shuffle where they treat existence as the ultimate defence. As if any life, no matter how controlled, commodified and ended, is automatically better than not being bred into a system of use. But that logic would horrify us in any other context.
We do not defend injustice by saying, “Well, the victims would not exist without the system.” We do not justify exploitation by pointing out that exploitation creates more individuals to exploit. We do not preserve oppression because it keeps producing bodies.
That is not compassion. That is circular reasoning.
The question also hides another truth. Many farmed animals have not simply been domesticated. They have been redesigned.
Humans have taken animals and shaped them around profit.
Turkeys have been bred so large that reproduction can become a managed human process rather than a normal part of their own lives. Chickens used for flesh have been pushed into bodies that grow at grotesque speed. Dairy cows have been turned into milk machines, their biology bent around output. Egg-laying hens have been bred to produce far more eggs than their wild ancestors ever would. Sheep, pigs, ducks and others have all been selected, controlled and altered for human advantage.
These are not animals preserved lovingly in their natural form. They are the products of human supremacy.
So when people say, “Do you want these breeds to go extinct?” they are often asking the wrong question. The question should be: why do you want to preserve a line of animals engineered for exploitation?
If a breed exists because humans manipulated bodies for maximum output, then ending that breeding is not a tragedy. It is a refusal to keep making animals in forms designed around human extraction.
Some individuals already here would need sanctuary. Some would need lifelong care. Some breeds would be phased out because continuing to breed them would mean continuing the injustice built into their bodies. That is not abandonment. It is responsibility. There is a difference between caring for those who already exist and deliberately creating more victims.
Veganism does not demand that animals already alive be discarded. It demands that we stop producing animals as resources.
A vegan world would still include responsibility for the remaining animals already here. Sanctuaries, rehoming networks, protective homes and non-exploitative care would all have a role. Animals would not become worthless because people stopped eating them. They are already worth more than their usefulness.
The goal would not be to keep farmed animal populations. The goal would be to stop breeding animals into property status.
That is the part people resist because it cuts through the fantasy. Many people like imagining farmed animals as part of a timeless countryside. Cows in fields. Hens in straw. Sheep on hills. A farmer leaning on a gate, apparently doing everyone a favour. The reality is industrial reproduction, ownership, confinement, separation, transportation and slaughter.
The quaint image survives because people need it to survive. It makes exploitation look like heritage. It makes control look like care. It makes a business model look like a relationship.
But farmed animals are not here because humans love them.
They are here because humans use them.
That is why the “what happens to the animals?” question can sound compassionate while defending the very system that treats animals as commodities. The concern appears right at the point where liberation is discussed, not when animals are being bred, separated, milked, caged, loaded onto lorries or killed. Funny that.
The animals are apparently a concern only when someone suggests we stop using them.
There is also the wider picture, which people often miss. A vegan world would not be a world with fewer animals in any meaningful moral or ecological sense. It would be a world with fewer domesticated animals bred into captivity and far more room for free-living animals to exist on their own terms.
Animal agriculture consumes land at an enormous scale. Not just land for grazing, but land for growing feed crops. Land that could be forest, wetland, meadow, scrub, habitat, home. Land that could support wild boar, deer, birds, insects, amphibians, reptiles and countless other lives not bred into ownership. People ask where the cows would go, but rarely ask where the wild animals went. They ask what happens to chickens, but not what happened to the birds displaced by feed production.
They ask whether sheep would disappear, but not why hillsides have been stripped of richer ecosystems to maintain grazing.
This is the deeper reversal.
Animal agriculture does not fill the world with animals. It fills the world with controlled bodies while pushing free-living animals aside. It replaces ecological complexity with ownership.
A vegan world would not be empty. It would be less dominated by animals bred as commodities and more open to animals who belong to themselves.
That is what liberation means. Not more picturesque captivity. Not nicer branding. Not “ethical” exploitation with better lighting. Freedom.
And no, freedom does not mean every domesticated animal becomes a wild animal overnight. It does not mean opening every gate and pretending dependency does not exist. Some animals have been made dependent on us. That dependence creates obligations. It does not create a right to keep exploiting them.
If humans breed animals into dependence, the answer is not to continue exploiting them forever.
The answer is to stop creating that dependence.
This is where the supposed “extinction” argument collapses. Farmed animal breeds are not equivalent to free-living species. A breed maintained by forced reproduction for commercial use is not a wild population struggling to survive habitat loss. It is a human project.
Ending a human project is not the same as wiping out a species.
Nobody is proposing that all bovines vanish, all pigs vanish, all birds vanish, all sheep-like animals vanish. Many farmed animals have wild ancestors or relatives. Pigs descend from wild boar. Chickens from red junglefowl. Sheep have wild relatives. The living world is not dependent on the continued existence of slaughterhouse supply chains. What people are really defending is not biodiversity.
It is familiarity.
They do not want to imagine a countryside without the animals they have been taught to see as scenery, food and tradition. But nostalgia is not justice. A field full of animals who exist because humans intend to profit from them is not peace. It is a holding pattern before extraction.
The question “what would happen to all the animals?” should be taken seriously, but not because it defeats veganism. It should be taken seriously because it reveals how deeply animal ownership has shaped public thought.
People see animals bred for human use and cannot imagine their value outside that use.
That is the tragedy.
Not that fewer animals would be born into exploitation.
That fewer people can imagine animals existing without being useful to us.
A vegan world would mean fewer cows bred for milk and flesh. Fewer pigs bred for slaughter. Fewer chickens bred for eggs and bodies. Fewer sheep bred for wool and meat. Fewer fish bred into tanks and cages. Fewer animals created only to have their lives taken apart for human preference.
And yes, that would mean many human-made breeds would decline.
Good.
Not every continuation is a moral good. Some things should end. Some systems should stop reproducing themselves. Some populations exist at a scale only because injustice keeps manufacturing them. The animals already here deserve care.
The animals not yet born deserve not to be bred into use.
That is the answer.
Not abandonment. Not chaos. Not extinction panic. Not fields full of confused cows after the last steak is sold.
An end to breeding. Sanctuary where possible. Protection without ownership. Land returned to free-living communities. An end to the idea that existence inside exploitation is something animals should be grateful for.
“What would happen to all the animals if everyone went vegan?”
Nobody would be born as property.
Nobody would be turned into products.
Nobody would have their bodies treated as resources.
And far more space could be returned to those who were never ours in the first place.