Best Pets for Flat Living and How to Care for Them

A flat can be a lovely home for a pet. The trick is choosing an animal whose needs fit the space, your routine and the care you can offer every day. A tiny animal does not necessarily need a tiny home, and a quiet pet is not automatically an easy one.

There is no single best pet for every flat. An adult cat already comfortable living indoors may suit one household; a well-matched dog may suit another. Small mammals and fish can also be options, provided you have room for a proper habitat.

Before choosing a pet, look beyond the floor plan

• Check permission: understand the tenancy, lease and building arrangements before bringing an animal home. Get any required consent in writing.
• Measure the actual living space: include the enclosure, equipment, food storage and room for exercise, rather than just a corner for a bed.
• Think about your day: who will provide company, feeding, cleaning and care when you are working or away?
• Consider noise and heat: shared corridors, thin walls and a flat that overheats can all affect the match.
• Budget for the whole commitment: equipment, food, bedding, routine veterinary care, unexpected treatment and holiday care all count.

Which pets can suit a flat?

Cats: choose one that is comfortable indoors

An adult rescue cat with a known history can make it easier to find a suitable match. Tell the rescue you live in a flat and whether safe outdoor access is possible. A cat used to roaming may struggle with a permanent change to indoor life.

Give your cat places to climb, hide, scratch and sleep undisturbed. Make interactive play part of each day and keep food, water and toileting areas appropriately separated. Allow for a litter tray per cat plus one extra, in quiet, accessible locations. Scoop regularly.

Secure windows and prevent access to an unsafe balcony. Supervision alone will not prevent a sudden fall. Any balcony enclosure needs to be securely fitted and safe against escape or entanglement. Indoor cats still need veterinary care: discuss vaccinations, parasite prevention, weight and microchipping with your vet.

Read Cats Protection’s guidance on indoor cats.

Dogs: the individual matters more than a breed list

Some dogs live happily in flats, but choosing a small breed is no guarantee. Consider the individual dog’s energy, behaviour, health and ability to cope with communal spaces. A rescue team can help assess whether a particular dog is a good fit.

Every dog needs outdoor toilet opportunities, exercise, sniffing and company. Work out how you will get outside in bad weather and at night, and what happens if the lift stops working. A balcony is not a substitute for walks. If you already have a dog, our companion guide covers moving into a flat with a dog.

Rats: sociable pets with daily needs

Rats can be engaging companions, but should live with compatible rats rather than alone. They need a spacious, well-ventilated cage with opportunities to climb, explore and rest, plus daily interaction and supervised exercise in a rat-proofed area. A hamster cage is not a suitable shortcut.

Provide appropriate bedding, a balanced rat diet and fresh water, and keep their home clean. Before adopting, find a vet who treats rats and ask about likely care costs. Blue Cross explains rat care in more detail.

Hamsters: small animals that need substantial space

A hamster can suit someone who enjoys observing evening activity, but a wheel beside your bed may be less appealing at 2am. Respect daytime sleep and let handling happen at the animal’s pace.

Blue Cross recommends housing no smaller than 100cm by 50cm of floor space and 50cm tall. Provide deep, suitable bedding for burrowing, hiding places, enrichment and an appropriately sized solid running wheel. Hamsters do not need a companion; most species are naturally solitary and may fight if housed together. Seek species-specific guidance before choosing a setup.

Read the Blue Cross hamster care guide.

Guinea pigs: allow plenty of floor space

Guinea pigs need compatible guinea pig company, room to move and hide, and a clean, comfortable environment. They are not well suited to being squeezed into a small cage because the flat has little spare space.

Daily care includes fresh water, plentiful good-quality hay, appropriate vegetables and a suitable guinea pig food that supports their vitamin C needs. Check appetite, droppings and behaviour every day. Guinea pigs and rabbits should not be housed together.

See the RSPCA’s guinea pig feeding advice and guidance on companionship.

Fish: a proper aquarium, not a decorative bowl

An aquarium can work in a flat if you have space for the right tank and the patience to maintain it. Choose the species before buying the equipment. Tank size, filtration, temperature and compatible companions all depend on the fish.

Establish the aquarium’s biological filtration before adding fish, use water tests to check conditions, and follow species-specific advice on feeding and partial water changes. Clear-looking water is not proof that it is safe. Avoid bowls: they do not offer the stable, properly filtered environment fish need. Read the RSPCA’s aquarium guidance.

What about rabbits, birds and reptiles?

Rabbits can live indoors, but need substantial permanent space, a compatible rabbit companion and a rabbit-proofed environment. Cables, plants and furniture need attention. They are a serious space commitment, not a compact alternative to a cat. The RSPCA explains what indoor rabbits need.

Birds can be noisy and need species-appropriate space, activity and companionship. Reptiles may require carefully controlled heating, lighting and humidity, specialist veterinary care and a long commitment. Research the exact species before deciding that either is an easy flat pet.

Make everyday care part of the decision

Before adopting, sketch where everything will go and write out an ordinary working day. Include cleaning, interaction, feeding, exercise and who takes over if you are away. If that plan only works on your quietest weekends, reconsider the match.

Ask a rescue about individual animals suited to your home and find a vet who treats your chosen species before you need one. For help presenting your pet to a prospective landlord, sister site Paw Keys offers a pet CV; it supports your application but does not replace any required permission.

This is general welfare guidance, not an individual veterinary assessment. Care needs vary by species, age, health and temperament.