Two to three inches for a medium, muscular cat
An older Havana Brown should be able to enter her litter tray over a side lowered to roughly two to three inches. The Havana Brown is a medium-sized cat with a distinctive rich brown coat, green eyes and more muscle than her elegant outline suggests. In her senior years that muscle fades unevenly, often from the hindquarters first, and the step over a standard tray wall becomes a two-part effort: front legs up and over, then a scrabble behind. A lowered entry restores the single smooth motion she used when she was younger, which matters because cats repeat what feels effortless and avoid what does not.
A social cat gives readable signals
The Havana Brown is famously people-oriented and communicative, and an older Havana often reports a tray problem socially before she abandons the tray. She may follow you to the litter area and complain, paw at the rim while looking at you, or use the tray only when someone is nearby to witness the difficulty. Deposits appearing beside the entry, especially from a cat with a lifetime of tidy habits, deserve a mechanical explanation first: measure the rim she is being asked to cross. If she enters willingly after the side is lowered and goes back to covering her waste thoroughly, you have strong evidence the height, not her attitude, was the issue all along.
Placing the tray along her daily routes
An older Havana Brown tends to stay near her people, so the low-entry tray works best on the floor where she actually spends her day, not isolated in a basement she must reach by stairs. Position the lowered side facing her usual approach, with enough light for her to judge the step and enough quiet that she is not startled mid-entry by household traffic. Keep litter at a consistent, moderate depth, because this breed notices changes and a suddenly deep fill changes the effective height of the inside floor. If you run two trays, lower the entry on both; a senior cat should not have to remember which of her trays is the climbable one.
Health checks that belong with the tray change
Lowering the entry helps an older Havana Brown whose joints are stiff, but it does not explain every change in litter habits. Increased thirst and larger urine clumps, weight loss along her spine despite a normal appetite, or a new habit of flooding the tray and leaving quickly all warrant a vet conversation for a senior cat, with the tray change noted as context. Likewise, if she steps in happily but cries while posturing, or produces very small, frequent stools, the problem sits beyond carpentry. A brief note of when her habits changed, kept with her records, gives the vet a timeline instead of a guess.
Handing litter duty over without losing the setup
Havana Browns bond closely with their households, and an older cat may have several people sharing her care across a week. If each helper assumes a standard tray is fine, her carefully lowered entry can vanish the moment a cracked tray is replaced. Recording which tray she uses, its lowered entry height and where it stands in KinsLe Pet Passport keeps that hard-won arrangement attached to her profile, so family, sitters and vet staff all work from the same senior-care picture.