Support first: firm beats fluffy
An arthritic cat's problem is not softness, it is leverage. To stand up, she has to push sore elbows, hips and shoulders through whatever she is lying on. A deep, cloud-like cushion lets her body sink until her joints sit at awkward angles, and then offers nothing firm to push against, so rising becomes a visible scramble. A supportive foam or densely packed base does the opposite: it spreads her weight evenly, keeps hips and spine level, and gives her a stable platform to rise from.
Test a bed the way she will. Press your hand in firmly; it should compress a little, then hold, not bottom out against the floor. A modest bolster around two or three sides earns its place too, because older cats lean. Resting a chin or a stiff shoulder against a raised edge takes pressure off the joint below it, and many senior cats settle faster with something to brace against.
The entry matters as much as the filling
Watch your cat approach her current bed before you shop. If she hesitates, steps in with her front paws and then hauls her hindquarters over a high rim, the wall of the bed is part of her pain. Choose a design with one low or cut-down front edge so she can walk in almost level, especially for overnight use when joints are stiffest after stillness.
Height off the floor cuts both ways. A bed placed on a sofa or raised platform asks for a jump at both ends of every nap, which quietly trains a sore cat to sleep on the cold floor instead. Floor-level placement on a rug or mat, so the bed cannot slide as she pushes up, is usually the kinder arrangement. If her favourite sleeping place is elevated and non-negotiable, add a stable step or ramp rather than fighting her preference.
Warmth, position and the second-bed rule
Stiff joints dislike cold, so site the bed away from draughts, exterior doors and tiled floors that hold a chill, and let her have the sun patch if she seeks one. Gentle ambient warmth from the room itself is the safe baseline. Any heated pad should be low, made for pets, and leave room for her to move off it freely, because a stiff cat who cannot shift position easily should never be trapped on a heat source.
Senior cats rarely commute. If she spends mornings in the kitchen and evenings in the living room, two modest supportive beds, one in each territory, serve her better than one expensive bed in a room she has stopped visiting. Keep a litter box and water within an easy, level walk of the main bed, so resting does not mean choosing between comfort and a long trip.
Keeping the bed usable week after week
A bed she loves becomes a bed full of shed hair, dander and the occasional accident, so a removable washable cover is not a luxury. Wash and fully dry the spare cover on rotation so she is never left bedless while laundry runs. Check the foam monthly: once a base develops a permanent hollow where her hips sit, the support is gone even if the cover still looks new, and replacing the insert restores what her joints were relying on.
Mention at her next senior check exactly where she sleeps, how she rises, and whether she has abandoned a once-favourite spot, because those details help a vet judge joint comfort between examinations, and sharing them through KinsLe Family Sharing means every family member works from the same bedding and care details.