Antispeciesism | Animal Welfare Hub

Speciesism — the assignment of different moral value to beings based solely on their species membership — is a form of bias analogous to racism and sexism. The antispeciesist position holds that species membership alone is not a morally relevant criterion, and that sentience is the appropriate basis for moral consideration.

Defining Speciesism

The term was coined by psychologist Richard Ryder in 1970 and popularized by philosopher Peter Singer in Animal Liberation (1975). Speciesism is the assumption that members of one species (typically humans) have greater intrinsic moral value than members of other species, simply by virtue of species membership.

"Racism and speciesism share the same logic: the suffering of those who look like us matters more than the suffering of those who don't. In both cases, this judgment does not stand up to moral scrutiny." — Peter Singer, Animal Liberation

The Core Argument

The antispeciesist argument follows a simple logical structure:

The Equal Consideration Argument

Premise 1: The capacity to suffer is the only morally relevant criterion for having one's interests considered.
Premise 2: Many non-human animals have the capacity to suffer (they are sentient).
Premise 3: Species membership alone is not a morally relevant criterion (a being doesn't suffer more because it's human).
Conclusion: Therefore, the interests of sentient non-human animals must be given equal consideration to comparable human interests.

Note: "Equal consideration" does not mean "identical treatment" — a dog's interest in not being eaten is not the same as a human's interest in education. But both interests in avoiding pain deserve equal moral weight.

Key Philosophical Thinkers

Thinker	Framework	Key Work	Position
Peter Singer	Utilitarian	Animal Liberation (1975)	Equal consideration of interests; speciesism is morally unjustifiable
Tom Regan	Rights-based	The Case for Animal Rights (1983)	Animals are "subjects-of-a-life" with inherent value and rights
Gary Francione	Abolitionist	Introduction to Animal Rights (2000)	All sentient beings have one right: not to be treated as property
Martha Nussbaum	Capabilities	Frontiers of Justice (2006)	Animals have capabilities that justice requires us to protect
Christine Korsgaard	Kantian	Fellow Creatures (2018)	Animals are ends in themselves; their good matters to them
Jeff McMahan	Comparative	The Ethics of Killing (2002)	Cognitive complexity matters but basic welfare counts equally

Common Objections and Responses

Objection 1: "Humans are superior to animals in intelligence, rationality, and culture — this justifies differential treatment."

Response: If intelligence justified differential treatment, we'd have to accept that more intelligent humans have greater moral worth than less intelligent humans — a conclusion virtually everyone rejects. We don't treat infants or people with severe cognitive disabilities as having lesser moral worth. The same logic applies across species.

Objection 2: "It's natural for humans to eat animals — it's been done throughout history."

Response: Natural ≠ ethical. Slavery, child labor, and the subjugation of women were also practiced throughout history and were considered "natural." The moral question is not what is natural but what is justifiable. Moreover, modern factory farming bears little resemblance to historical practices.

Objection 3: "Animals don't have the cognitive complexity for rights — rights require the ability to understand and reciprocate obligations."

Response: This contractarian view also excludes human infants, the severely cognitively impaired, and future generations — all of whom we consider to have moral status. If we include these humans on the basis of their sentience and capacity to suffer, consistency requires extending the same consideration to similarly-situated animals.

Objection 4: "If we gave animals full equal consideration, we'd have to intervene in nature to prevent predation."

Response: Equal consideration of interests doesn't require eliminating all suffering in nature. We don't intervene in every human injustice either. The practical demand is that humans stop actively causing unnecessary animal suffering — factory farming, experimentation, entertainment cruelty — not that we reorganize ecosystems.

Objection 5: "My religion teaches that humans are special and were given dominion over animals."

Response: Many religious scholars interpret "dominion" as stewardship, not exploitation. Jainism, Buddhism, and many strands of Hinduism explicitly advocate ahimsa (non-harm) toward animals. Even within Christianity, Islam, and Judaism, scholars argue that compassion for animals is a core religious duty, not a contradiction with faith.

Speciesism vs. Other Forms of Discrimination: A Comparison

Racism

Assigning lesser moral value based on race. Recognized as morally indefensible because race is not morally relevant — only arbitrary biological variation.

Sexism

Assigning lesser moral value based on sex. Recognized as indefensible because sex is not morally relevant to capacity for suffering or flourishing.

Speciesism

Assigning lesser moral value based on species. Antispeciesists argue this is equally arbitrary — species membership does not determine capacity for suffering.

Key Distinction

Unlike race/sex, species differences are real and relevant for some purposes (e.g., a dog needs different care than a human). Antispeciesism does not deny differences — only that they justify causing suffering.

Degrees of Speciesism

Speciesism exists on a spectrum. Most people already operate with anti-speciesist intuitions in some contexts:

Scenario	Common Moral Intuition	Antispeciesist Analysis
Kicking a dog for fun	Wrong (most agree)	Consistent with antispeciesism
Torturing a pig for fun	Wrong (most agree)	Consistent with antispeciesism
Confining pigs for cheap bacon	Acceptable (common view)	Speciesist — same suffering, different purpose
Testing cosmetics on rabbits	Concerning (growing view)	Moving toward antispeciesism
Killing one human vs. 1,000 mice	Save human (most agree)	Context-dependent — not automatically speciesist

The Expanding Circle

Historian and philosopher Peter Singer argues that moral progress follows a pattern of "expanding the circle" — the group of beings whose interests count. The circle has expanded from tribe → nation → all humans → (arguably) all sentient beings. Antispeciesism is the next step in this arc of moral progress, consistent with historical trajectories of expanding moral consideration.

Practical Implications

Antispeciesism, taken seriously, implies significant changes to:

Diet: Reducing or eliminating consumption of animal products from factory farms
Research: Phasing out animal testing where alternatives exist
Entertainment: Ending practices that cause animal suffering for human amusement
Law: Extending legal protections to sentient animals based on their capacity to suffer
Conservation: Including individual animal welfare considerations, not just species preservation

Explore the Philosophy Further

Understanding speciesism is the first step. Explore animal rights philosophy, learn about moral weight frameworks, or find out how to support organizations working to end speciesist practices.