The cheapest pets to own are usually small rodents like hamsters and rats, with estimated lifetime costs of about $500–$1,500. If you want a traditional long-term companion, a domestic shorthair cat often offers the best mix of affordability, lifespan, and low maintenance.
Last updated: April 27, 2026
What is the cheapest pet to own? Hamsters and rats are usually the cheapest pets overall, costing about $500–$1,500 over their lifetime. For a longer-lived companion animal, a domestic shorthair cat is often the most affordable mainstream pet.
The best low-cost pet is not always the one with the lowest adoption fee. Long-term affordability depends on food, grooming, veterinary care, lifespan, housing, supplies, and emergency costs. This guide compares the cheapest pets to own by lifetime cost, annual cost, maintenance level, and hidden expenses using public cost references from the ASPCA and pet ownership context from the AVMA.
- Hamsters or rats — cheapest overall lifetime cost.
- Domestic shorthair cats — best affordable mainstream pet.
- Chihuahuas — one of the cheapest dog breeds.
- Mixed-breed shelter dogs — best value for dog adoption.
- Beagles — affordable medium-sized family dog.
Cheapest Pets to Own: Quick Comparison
| Rank | Pet | Estimated Lifetime Cost | Typical Annual Cost | Maintenance Level | Best For |
|---|---|---|---|---|---|
| 1 | Hamsters or Rats | $500–$1,500 | $200–$400 | Low–Moderate | Lowest total lifetime cost |
| 2 | Domestic Shorthair Cat | $12,000–$18,000 | $800–$1,200 | Low | Best low-cost mainstream pet |
| 3 | Chihuahua | $14,000–$22,000 | $1,000–$1,500 | Low–Moderate | Cheapest dog breed for many owners |
| 4 | Mixed-Breed Shelter Dog | $15,000–$28,000 | $1,200–$2,500 | Moderate | Best adoption value |
| 5 | Beagle | $16,000–$25,000 | $1,300–$1,800 | Moderate | Affordable family dog |
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Bottom line: Small rodents have the lowest total lifetime cost, but they offer fewer years of companionship. A domestic shorthair cat often works best if you want a longer-term, low-maintenance companion. Chihuahuas and medium-sized shelter dogs usually rank among the most affordable choices for dog owners.
1. Cheapest Small Pets: Hamsters and Rats Lowest Lifetime Cost
Hamsters and rats are usually the cheapest pets if you compare total lifetime cost. Their food, bedding, toys, and housing cost far less than most cat or dog expenses.
The trade-off is lifespan. Because many small rodents live only a few years, their total cost stays low, but they do not provide the same long-term companionship as cats or dogs.
Why they cost less: They eat little, need inexpensive basic supplies, use small living spaces, and live shorter lives.
Hidden costs to watch: Exotic-vet care can cost more than expected. A single illness visit may cost more than the animal’s purchase price.
2. Domestic Shorthair Cat: Best Affordable Mainstream Pet Best Overall Value
A domestic shorthair cat is one of the best low-cost pets if you want a traditional companion animal. Compared with many dogs and purebred cats, domestic shorthairs usually need less grooming, eat moderately, and have predictable routine care costs.
A typical indoor cat may cost about $800–$1,200 per year for food, litter, routine veterinary care, and basic supplies. Emergency care, dental cleanings, prescription diets, or senior care can raise that number.
Shelter adoption can also lower your first-year cost. Many shelters include spay or neuter surgery, first vaccines, and microchipping in the adoption fee.
Why domestic shorthair cats rank well: They need little grooming, have manageable food costs, live long lives, and cost less to set up than many purebred pets.
Hidden costs to watch: Litter, dental cleanings, urinary issues, senior cat care, and emergency vet bills can raise the total.
3. Chihuahua: One of the Cheapest Dog Breeds Cheapest Dog Breed
Chihuahuas often rank as one of the cheapest dog breeds because their small size lowers many recurring costs. They eat less than larger dogs, need smaller medication doses, and usually avoid expensive professional grooming.
For owners comparing affordable dogs, size matters. A small dog can cost less across food, preventives, beds, crates, collars, and even some veterinary medications.
Why Chihuahuas cost less: They eat very little, need minimal grooming, use smaller supplies, and often live long lives.
Hidden costs to watch: Dental disease, fragile bones, injury risk, behavior training, and senior care can still add up.
4. Mixed-Breed Shelter Dog: Best Budget Dog Value Best Adoption Value
A medium-sized mixed-breed shelter dog can be one of the best-value choices for people who want a dog. Adoption fees usually cost much less than breeder prices, and many shelters include vaccines, sterilization, and microchipping.
Mixed-breed dogs may also avoid some breed-specific health risks, although no dog comes with a guarantee. For the best value, choose a healthy small-to-medium adult dog with known temperament and moderate exercise needs.
Why mixed-breed shelter dogs cost less: They often have lower upfront costs, included basic care, and fewer predictable breed-specific expenses.
Hidden costs to watch: Size, training needs, activity level, unknown medical history, boarding, and emergency care can change the total quickly.
5. Beagle: Affordable Medium-Sized Family Dog Best Mid-Size Value
Beagles often cost less than many popular family dogs because they have moderate size, short coats, and low grooming needs. They eat more than Chihuahuas but far less than many large breeds.
Choose a Beagle if you want an active, sturdy, medium-sized family dog and want to avoid high grooming costs.
Why Beagles cost less: They have moderate food needs, short coats, low grooming costs, and manageable routine care needs.
Hidden costs to watch: Ear infections, appetite control, escape-proof fencing, training, and exercise needs can increase spending.
Cheapest Pets by Monthly Cost
| Pet | Estimated Monthly Cost | Main Monthly Expenses |
|---|---|---|
| Hamster or rat | $15–$35 | Food, bedding, enrichment |
| Domestic shorthair cat | $65–$100 | Food, litter, routine care savings |
| Chihuahua | $85–$125 | Food, preventives, basic supplies |
| Mixed-breed shelter dog | $100–$210 | Food, preventives, training, supplies |
| Beagle | $110–$150 | Food, preventives, supplies |
Monthly costs are easier to budget than lifetime totals, but they do not include every surprise expense. Owners should also set aside money for emergency vet care, dental treatment, and age-related medical needs.
Cheapest Low-Maintenance Pets for Beginners
Beginners should look for pets with simple housing, predictable diets, low grooming needs, and manageable veterinary requirements. The lowest-maintenance option is not always the cheapest if it needs specialized care.
- Hamsters or rats: Low total cost, but they still need clean housing and enrichment.
- Domestic shorthair cats: Good for owners who want a longer-lived companion with relatively low grooming needs.
- Chihuahuas: Lower food and grooming costs than many dogs, but they still need training, dental care, and daily attention.
- Adult shelter pets: Often easier to budget for than puppies or kittens because size, temperament, and some health history are already known.
Cheapest Pets for Apartments
Apartment-friendly pets are usually small, quiet, and easy to house safely. Cost is only one factor; noise, exercise needs, landlord rules, and space should also guide your choice.
- Hamsters or rats: Low space needs and low monthly costs.
- Domestic shorthair cats: Good indoor companions if you can manage litter, scratching, and enrichment.
- Chihuahuas: Small size helps, but they may need training to manage barking.
- Small adult mixed-breed dogs: A calm adult dog can be a better apartment fit than a high-energy puppy.
Pets to Avoid if You Are on a Tight Budget
Some pets are inexpensive to buy but costly to care for. If your budget is limited, be cautious with animals that need specialized diets, large enclosures, frequent grooming, or exotic veterinary care.
- Large dog breeds: Higher food, medication, boarding, and supply costs.
- Long-haired or curly-coated dogs: Frequent grooming can become expensive.
- Parrots and exotic birds: Long lifespans, specialized diets, and veterinary care can raise lifetime costs.
- Reptiles with complex habitat needs: Lighting, heating, humidity, and exotic-vet care can add up.
- Purebred pets with known health risks: Some breeds face predictable medical expenses.
Cheapest Pet by Category
| Category | Best Low-Cost Choice | Why |
|---|---|---|
| Cheapest pet overall | Hamster or rat | Lowest total lifetime cost |
| Cheapest mainstream pet | Domestic shorthair cat | Low grooming, moderate food costs, long lifespan |
| Cheapest dog breed | Chihuahua | Small size lowers food, medication, and supply costs |
| Best value dog | Mixed-breed shelter dog | Lower adoption cost and often included basic care |
| Best affordable family dog | Beagle | Moderate size and low grooming needs |
What Makes a Pet Cheap or Expensive?
Budget-friendly pets usually share a few traits. They stay small, eat less, need little grooming, and avoid predictable high-cost medical issues.
Expensive pets often grow large, need frequent grooming, carry breed-specific risks, or require costly senior care.
- Size: Bigger pets cost more to feed, medicate, transport, board, and equip.
- Grooming: Long coats, curly coats, and high-maintenance breeds can add hundreds or thousands of dollars over time.
- Vet care: Exams, vaccines, parasite prevention, dental care, and emergencies drive major lifetime costs.
- Lifespan: Short-lived pets cost less overall, while long-lived pets may cost more in total.
- Breed risk: Some breeds face inherited issues that raise long-term spending.
- Location: Vet care, grooming, boarding, and supplies vary by state and city.
Hidden Costs Even Cheap Pets Can Have
A low-cost pet can still become expensive. Many owners budget for food and supplies but forget medical care, training, travel care, and emergencies.
- Dental care: Cats and small dogs often need dental cleanings as they age.
- Emergency vet visits: Accidents, poisoning, injuries, and sudden illness can cost far more than routine care.
- Senior care: Older pets may need bloodwork, medication, special diets, or more frequent exams.
- Housing and supplies: Cages, litter boxes, crates, beds, carriers, enrichment, and replacement items add up.
- Behavior and training: Dogs may need classes, private training, or behavior support.
- Boarding and pet sitting: Travel can create recurring costs that new owners often overlook.
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How to Choose the Cheapest Pet for Your Budget
The cheapest pet for you depends on whether you want the lowest total cost, the lowest yearly cost, or the best long-term value.
- Choose a hamster or rat if you want the lowest total lifetime cost.
- Choose a domestic shorthair cat if you want a low-maintenance companion with a long lifespan.
- Choose a Chihuahua if you want one of the lowest-cost dog breeds.
- Choose a mixed-breed shelter dog if you want adoption value and flexible breed choice.
- Choose a Beagle if you want a medium-sized family dog with lower grooming costs.
Before you adopt, ask about the animal’s age, medical history, temperament, diet, grooming needs, and expected adult size. A slightly higher adoption fee for a healthy, well-matched pet can cost less than a “free” pet with unknown medical or behavior issues.
FAQ
What is the cheapest pet to own?
The cheapest pets to own are usually small companion animals like hamsters and rats, with estimated lifetime costs of about $500–$1,500. For a traditional long-term companion pet, a domestic shorthair cat is often one of the cheapest options.
What is the cheapest pet to own long-term?
Hamsters and rats usually cost the least over a full lifetime. For a mainstream pet with a longer lifespan, domestic shorthair cats often offer one of the most affordable long-term choices.
What is the cheapest dog breed to own?
Chihuahuas are often one of the cheapest dog breeds because they eat very little, need minimal grooming, and have lower size-related routine costs than larger dogs.
Are cats cheaper than dogs?
Cats often cost less than dogs because they usually need less food, less grooming, less boarding, and fewer training expenses. Medical problems and senior care can still make some cats expensive.
Are mixed-breed pets cheaper than purebreds?
Mixed-breed pets often cost less upfront and may avoid some breed-specific health risks. Actual cost still depends on size, age, health history, activity level, and care needs.
What is the cheapest low-maintenance pet?
Hamsters and rats are among the cheapest low-maintenance pets by total cost, but domestic shorthair cats may be better for owners who want a longer-lived companion with relatively simple day-to-day care.
Can a cheap pet become expensive?
Yes. Emergencies, dental disease, chronic illness, senior care, training, and special diets can make even a cheap pet expensive. Budget for both routine care and unexpected vet bills.
The cheapest pets overall are small companion animals like hamsters and rats. The cheapest mainstream long-term pet is often a domestic shorthair cat. For dog owners, Chihuahuas and medium-sized mixed-breed shelter dogs usually offer the best balance of low cost, companionship, and manageable care needs.
These lifetime cost estimates combine common recurring pet expenses including food, routine veterinary care, supplies, grooming, housing, and basic preventive care. We also reference general pet care cost guidance from the ASPCA and pet ownership context from the AVMA. Actual costs vary by location, age, health, care level, and emergency needs. Use these figures as budgeting guidance, not guaranteed totals. For more detail, read our full pet lifetime cost methodology.