A pair or trio in a tall, narrow-barred cage
Rats should never start as a single pet. They are intensely social, groom each other constantly, and sleep in a heap, so begin with two or three rats of the same sex who already live together, and give them height to use. Choose a tall wire cage with bar spacing narrow enough that a young rat cannot push through, solid shelves or ledges rather than barred ones, and doors wide enough for you to lift a sleepy rat out without dragging it through a small opening.
Rats climb, leap, and balance in ways guinea pigs and rabbits do not, so levels, ropes, and branches are used all day here. At the same time they squeeze through gaps and chew with purpose, so check the cage for bent bars, chewed plastic bases, and latches that rest rather than lock before the rats move in.
Hammocks, fleece, and a corner litter tray
Hang hammocks at several heights — flat hammocks, corner hammocks, fabric tubes — because a rat group chooses a sleeping pile spot and it is usually the highest soft place available. Line solid shelves with washable fleece liners held by clips, swept for droppings daily and washed on a rotation, rather than loose dusty bedding spread across every level. Dust matters specifically for rats, whose airways are easily irritated, so avoid scented products, dusty litters, and strong sprays anywhere near the cage, and be cautious with softwood shavings that carry a strong resin smell.
Fix a litter tray to a ground-floor corner with paper-based litter, moving a few droppings into it for the first days; most rats adopt a corner tray quickly and the rest of the cage stays far cleaner. Add a deep box of plain bedding or coconut fibre at the base for digging, wooden chews and cardboard for shredding, and a heavy water bottle on two different levels so a blocked spout never leaves the group without water.
Food scattered, treats from hands, and free-roam time
Feed a complete rat pellet or a balanced rat mix scattered through the digging box and across a cleaned shelf each evening, so dinner involves searching rather than sitting at a bowl. Small pieces of plain vegetable, cooked egg, or similar kitchen scraps in moderation suit rats well as variety, but keep sugary and fatty extras occasional. Hand-feeding part of the ration is the fastest taming tool you have: rats learn a person's smell and hands through food faster than through being picked up.
Plan daily time out of the cage — on a sofa with a blanket, in a playpen, or in a proofed bathroom — because rats bond with people during exploration and play in a way caged time cannot replace. Block the gap under doors, move cables, and stay in the space with them.
A social room and one shared way of handling
Site the cage in a living room corner with daylight and evening company, out of direct sun and away from a bird cage or other prey-and-predator stress pairings. Rats are mostly active at dawn, dusk, and into the evening, which fits family life well.
Agree one household approach — scooping rats up from underneath with two hands, never lifting by the tail, the same cue words at feeding — and keep it with the cage-cleaning rota in one record. That shared record works well in KinsLe Family Sharing, where the rats' profile carries the handling and cleaning notes for everyone at home.