A cat who loses a leg rarely loses the wish to be up high, and she will attempt her old jumps until her body teaches her new limits. The owner's job is not to carry her to places she has not chosen. It is to redesign the vertical world into a shape her three legs can manage with confidence: climbs built from ramps and steps rather than leaps, landings that forgive a wobble, and floors that grip rather than skate away beneath her.
Start With the Leg She Has Lost
Which leg is missing decides where she needs help. A cat missing a front leg has lost a landing gear leg: jumping down and absorbing impact are her hard moments, so she needs ramps down, lower heights, and soft surfaces wherever she arrives. A cat missing a back leg has lost her engine: the big upward leap is what fades, so her routes need low launch points and steps that break every climb into small rises she can walk up. Watch her for a few days first: which jumps she still makes, which she studies and abandons, and where she hesitates at the top, looking down. That map of her real abilities guides the build.
Replace Jumps With Ramps and Steps
Build her climbs from pieces she can walk. Wide steps — an ottoman, then the sofa arm, then the shelf — turn a leap into a staircase, and staggered perches do the same job up a wall. Ramps cover the stretches steps cannot, at a gentle slope with a carpeted surface her claws can bite into. Every surface she travels should grip: carpeted shelves, mats on polished wood, runners on fast routes. Fix everything firmly: a wobbling step teaches her to fear a route rather than use it. Keep gaps realistic, too: a distance she once cleared may strand her now, and a stranded cat jumps anyway.
Landings, Floors, and Room to Turn
Give every descent a landing worth landing on — a firm cushion or a grippy mat, placed where she actually comes down rather than where the furniture looks tidy. Hard floors are the quiet hazard of the three-legged household, because a single paw skidding on laminate as she turns can twist the limbs doing double duty. Runners, mats at climb bases, and non-slip backing under rugs remove most of that risk. Leave turning space at the top of each climb, and keep her routes free of clutter.
Food, Water, Litter, and Sleep at Her Level
Put the essentials where she already lives. Food, water, and a bed belong on the floor level she uses most, so nothing she needs depends on a climb. Her litter tray needs one low side she can step over without hopping, or a cut-down entry, and a spot that never requires her to hurry. A slightly raised bowl can spare her remaining front leg and neck some strain. Keep a second water point on any upper level she inhabits. Her bed belongs at ground level too: warm, quiet, and walk-in, with no edge to negotiate.
Weight and Her Remaining Limbs
Her remaining legs now carry loads they were not designed to carry alone, and weight is the one factor entirely in your hands. Extra weight multiplies the strain on a single front leg or a lone back hip, meal after meal. Keep her meals measured, count treats carefully, and play daily at ground level: a wand toy dragged along the floor gives her a full hunt without a single leap. Ask her vet to check her gait, joints, and weight regularly even while she is young, and raise any stiffness or change in how she moves. Muscle is her protection: a lean, strong tripod cat copes for years, while a heavy one wears her support legs out early. Her climbing routes and weight record are easier to keep consistent when the whole household can see them, and KinsLe's Family Sharing holds that shared picture of her setup for everyone who feeds or plays with her.