Popular Pets: How to Choose a Companion You Can Care For

By Dr Duncan Houston

A popular pet is familiar, but familiarity does not make its care effortless. Dogs, cats, fish and smaller animals fit very different routines. Before choosing, picture an ordinary working day, a weekend away and a period when you need someone else to help. The right match is the animal whose needs your household can reliably meet.

Quick Answer

Dogs and cats are widely kept companions, while fish, small mammals, birds, reptiles and horses each attract owners with different interests and resources. Popularity does not establish suitability or low maintenance. Compare daily time, housing, social needs, costs, specialist support and long-term backup care before committing.

What ownership figures can and cannot tell you

In its March 2025 industry report announcement, the American Pet Products Association reported dogs in about 68 million US households and cats in about 49 million. These are dated survey-based household estimates, not a worldwide ranking or a count of individual animals.

A household may keep more than one species, so categories can overlap. Different surveys also use different populations and methods. Treat a popularity list as an introduction to choices, not evidence that a particular species will suit your home.

Dogs: plan for shared activity and practical support

Consider time for walks or other suitable activity, training, toileting, companionship and grooming. Look at the individual dog's age, history and behaviour rather than assuming a breed label guarantees a particular personality.

Work through your actual schedule. Who helps when you are delayed? Can you manage the dog comfortably on a lead? Are your housing arrangements suitable? Meet potential dogs through a responsible organisation or provider and discuss both your hopes and your limits.

Cats: independent choices still need daily care

Cats need clean toileting options, appropriate feeding, resting and hiding places, scratching opportunities and activity they choose to engage in. A reputation for independence is not a plan for leaving a cat without daily care.

Think about whether your home has space for separate resources and retreat, especially if other animals already live there. An adult cat's known preferences may help with matching, but no introduction guarantees immediate friendship with existing pets.

Fish: choose the species before the aquarium

Freshwater and marine fish are broad categories rather than single care profiles. Adult size, water conditions, compatible companions and swimming space vary. The aquarium is a living system that needs preparation and maintenance, not simply a decorative container.

The RSPCA's fish-care resources are a starting point for researching individual species. Decide which fish you can properly accommodate before buying a tank, and understand how you will manage equipment and water care while away.

For marine animals, investigate the particular system and species rather than buying a standard equipment list on assumption. Be realistic about the learning and ongoing work involved before adding animals.

Small mammals: small bodies do not mean small commitments

Rabbits, guinea pigs, rats, mice, hamsters and other small mammals differ in activity patterns, housing, diet, social arrangements and tolerance of handling. Avoid treating them as interchangeable starter pets.

Read a species-specific guide and ask about appropriate companions. Do not assume every small mammal should live alone or that all should be housed in pairs. PDSA's small-pet comparison helps owners start with those differences.

Consider who will clean the housing and whether the animal's active hours match the household. An adult should remain responsible for care when a pet is chosen for a child; enthusiasm is not a reliable substitute for a workable routine.

Birds: think beyond the cage

Research the species' space, flight opportunities, enrichment, social needs and noise before deciding. The RSPCA's bird-environment guidance helps frame housing as more than finding a cage that fits a corner.

Ask how a suitable daily routine will work in your home and who can provide knowledgeable care during absences. Some birds represent a long-term commitment that can extend through major changes in an owner's life. Do not choose primarily because you hope the bird will talk or enjoy handling.

Reptiles and other exotic animals: prepare the environment first

Quiet behaviour does not make care simple. Many reptiles require carefully controlled conditions and specialist equipment. Requirements for heat, lighting, humidity, diet and enclosure design depend on the species.

The RSPCA's exotic-pet guidance stresses the complexity of these needs. Check legal and sourcing requirements locally, confirm that you can maintain the setup and identify experienced veterinary support before acquiring the animal.

Be honest about whether you want an animal to observe or one that regularly seeks interaction. Repeated handling to meet an owner's expectations is not a substitute for understanding the species.

Horses: plan a whole care arrangement

Horse ownership involves appropriate land or boarding, daily management, equipment, farriery, transport and experienced support. Riding is only one part of the commitment. Consider the work and expense even on days when you cannot ride.

Horses also need suitable opportunities for movement and companionship, as the RSPCA's behaviour guidance explains. Assess the yard and care arrangements with someone experienced rather than selecting a horse first and solving the practicalities afterwards.

Confirm access to care before committing

Find a veterinary practice that sees the species and ask how routine and urgent care are arranged. The examination and preventive-care schedule should be tailored to the individual animal and species. Exotic pets should not automatically be assigned less frequent veterinary care because they are less familiar household companions.

Ask about transport, out-of-hours arrangements and any specialist referral options. Put the contacts in your care plan along with a backup caregiver who understands the animal's needs.

Common Mistakes

• Choosing from popularity, appearance or a social-media clip alone.
• Assuming a small, quiet or inexpensive animal has few needs.
• Buying housing before researching adult size and species requirements.
• Expecting a child to carry the full responsibility for care.
• Leaving holiday cover and specialist support until after acquisition.

Frequently Asked Questions

What is the easiest pet to keep?

There is no universal answer. A manageable match depends on the animal's needs and the time, space, money and support you can provide.

Does a popular breed suit most families?

No. Evaluate the individual animal and your household rather than relying on popularity or a general breed description.

Is it better to choose an adult animal?

An adult may have a more established routine and known preferences, but suitability still depends on the individual. Discuss matching with a responsible rescue or provider.

Do less common pets need less veterinary care?

No such rule applies. Ask a veterinarian experienced with the species to recommend an appropriate individual care schedule.

Choose for the ordinary days

Write a realistic care plan before making the commitment. The RSPCA's pet-selection guidance encourages considering time, space, experience and costs. A good choice is not the most fashionable animal; it is one whose daily life you are prepared to support.

ASK A VET™ encourages thoughtful pet selection and responsible care suited to the individual animal.