Cats are independent, don't need much care, and can do well in an apartment. They don't need a lot of room and can keep themselves busy.
Some small dog breeds, like Yorkshire Terriers, Chihuahuas, and French Bulldogs, do well in flats because they don't need as much space and don't need as much exercise.
Fish tanks can be a beautiful and relaxing addition to any apartment. They don't need much care and don't take up a lot of room.
Birds like budgies, canaries, and cockatiels that are small to medium-sized can make great city pets. They get along with people and can be taught to copy sounds.
Rabbits can be taught to use a litter box, and they don't take up much room. They love people and can form strong bonds with them.
Guinea pigs are gentle animals that don't need a lot of room to live in. They like being around people and can be kept in pairs.
Hamsters are small animals that are active at night and can live well in homes. They are easy pets to take care of.
Some reptiles can live in flats, such as leopard geckos or corn snakes. They don't need much room and have specific needs for care.
Mice and rats can live in a box and don't need a lot of space. They can also get close to the people who own them.
Ferrets aren't as popular as cats or dogs, but they can live in an apartment if they are trained and socialized properly.