For many people, companion animals (or pets) are beloved members of the family. Dogs, cats, and other animals provide comfort, companionship, and emotional support, and strong bonds often form between humans and the animals they live with.
Recognising this does not require ignoring the ethical problems within the modern pet industry. While many individual relationships between humans and animals are caring and respectful, the wider systems of breeding, selling, and abandoning companion animals raise serious welfare concerns.
Overpopulation
One of the most pressing issues in companion animal welfare is overpopulation.
In the United States alone, an estimated 6 to 7 million cats and dogs enter animal shelters each year (1). Of these, around 920,000 are euthanised annually due to overcrowding, lack of resources, or limited adoption demand (2). Many of these animals are young, healthy, and suitable for adoption.
The situation is similar, in other countries, including here in the UK, Australia, and much of Europe, where shelters and rescue organisations regularly operate at and above capacity (3). This overpopulation crisis is not caused by any single group. It is the result of multiple overlapping factors, including:
- Commercial breeding
- Private breeding by pet owners
- Impulse purchases
- Abandonment
- Failure to neuter animals
Together, these practices produce far more animals than there are homes available for them.
Commercial Breeding and “Puppy Mills”
A significant proportion of companion animals sold through pet shops and online marketplaces originate from large-scale commercial breeding operations, often known as “puppy mills” or “kitten mills.”
In the US, it is estimated that more than 10,000 large-scale dog breeding facilities exist, with only a minority subject to meaningful inspection or oversight (4). Similar operations exist across Europe and parts of Asia (5). Investigations into these facilities have repeatedly documented:
- Overcrowded cages
- Lack of veterinary care
- Poor sanitation
- Untreated injuries and disease
- Continuous breeding of female animals
Animals in these environments are often treated as production units rather than as sentient beings with social and psychological needs (6).
While some jurisdictions have introduced bans on pet store sales or strengthened licensing requirements, enforcement remains inconsistent, and illegal or poorly regulated breeding remains widespread (7).
Health Problems in Pedigree Breeding
Demand for specific breeds has also created serious welfare problems.
Selective breeding for appearance has led to widespread genetic disorders in many popular breeds. Flat-faced dogs such as pugs and bulldogs commonly suffer from breathing disorders, eye disease, and heat intolerance (8). Large breeds are prone to joint disease, while some small breeds experience chronic dental and cardiac problems (9).
These conditions are not accidents, they are the predictable result of prioritising appearance over health. Some desired features, such as curved spines and flat-noses, create lifelong health issues for the dogs concerned, yet breeders continue to pursue these breed standards for the purposes of profit.
Abandonment and Owner Responsibility
Not all overpopulation is driven by commercial breeding, many animals are abandoned each year due to:
- Changes in housing
- Financial difficulties
- Behavioural problems
- Lack of preparation
- Loss of interest
Studies consistently show that impulse purchases and inadequate education are major predictors of later surrender (10). This highlights the fact that bringing an animal into your life is a long-term responsibility, not a temporary lifestyle choice.
Dogs and cats can live for 10 to 20 years or more. When people acquire animals without planning for that commitment, the animals often pay the price.
Adoption and Rescue
Given the scale of overpopulation, adoption plays a crucial role in reducing harm. Animal welfare organisations consistently emphasise that adopting from shelters and rescues:
- Saves an existing animal’s life
- Reduces demand for commercial breeding
- Frees resources for further rescues
- Encourages responsible ownership (11)
This does not mean that every person who buys from a breeder has bad intentions, many simply lack information about the wider system they are supporting. However, good intentions do not cancel out any of the consequences.
When animals are purchased rather than adopted, demand for breeding increases, and shelters remain overcrowded.
Pets as Commodities
Underlying many of these problems is the way companion animals, and indeed farmed animals, are treated as commodities.
Animals are advertised, priced, traded, and discarded in much the same way as consumer products. Online marketplaces, in particular, have made it easier than ever to buy animals with little screening or accountability (12).
This commercial framing makes it easier to overlook the moral status of animals as individuals with interests, emotions, and needs of their own. When animals are primarily viewed as products, welfare becomes secondary to profit.
A More Ethical Model of Companionship
Critiquing the pet industry does not require rejecting human–animal relationships altogether. Many vegans and animal advocates support a model of companionship based on:
- Adoption rather than purchase
- Neutering to prevent overpopulation
- Lifelong commitment
- Evidence-based care
- Respect for animals’ autonomy
Under this model, humans act not as owners in a commercial sense, but as guardians with caring responsibilities.
Rescuing and caring for an abandoned animal can be a genuinely compassionate act. It provides safety, medical care, and emotional security to someone who has already been failed by human systems.
Conclusion
Companion animals bring joy, comfort, and meaning to many of our lives. At the same time, the systems that produce, sell, and discard millions of animals each year are ethically difficult to defend.
Overpopulation, commercial breeding, genetic disease, and abandonment are not isolated problems. They are interconnected consequences of treating animals as commodities rather than as individuals.
In a world where millions of healthy animals are waiting for homes, the most responsible and compassionate choice is usually not to buy, but to adopt.
Doing so helps shift the system away from profit and towards care, and brings our treatment of companion animals closer to the values of respect and responsibility that most of us already believe in.
Bibliography
- American Society for the Prevention of Cruelty to Animals (ASPCA). “Shelter Intake and Surrender Statistics.”
https://www.aspca.org/helping-people-pets/shelter-intake-and-surrender - ASPCA. “Pet Statistics.”
https://www.aspca.org/helping-people-pets/shelter-intake-and-surrender/pet-statistics - RSPCA UK. “Animal Abandonment and Rehoming.”
https://www.rspca.org.uk/whatwedo/latest/blogs/details/-/articleName/abandonment - Humane Society of the United States. “Puppy Mills FAQ.”
https://www.humanesociety.org/resources/puppy-mills-faq - European Commission. “Commercial Dog and Cat Breeding.”
https://food.ec.europa.eu/animals/animal-welfare/pets_en - USDA Office of Inspector General. “Animal Welfare Act Enforcement.”
https://www.usda.gov/oig - ASPCA. “Pet Store Sales Bans.”
https://www.aspca.org/protecting-animals/advocacy-center/pet-store-sales-bans - Packer, R. et al. (2015). “Impact of Facial Conformation on Canine Health.”
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0137496 - Bateson, P. (2010). “Independent Inquiry into Dog Breeding.”
https://www.rspca.org.uk/getinvolved/campaign/breeding - New, J. et al. (2000). “Characteristics of Shelter-Relinquished Pets.”
https://avmajournals.avma.org/view/journals/javma/216/12/javma.2000.216.1907.xml - Humane Society International. “Why Adopt?”
https://www.hsi.org/issues/pet_overpopulation/ - Four Paws. “Online Pet Trade Report.”
https://www.four-paws.org/campaigns-topics/topics/companion-animals/illegal-pet-trade
“Cows are amongst the gentlest of breathing creatures; none show more passionate tenderness to their young when deprived of them. In short, I am not ashamed to profess a deep love for these quiet creatures.”
–Thomas de Quincey