Pet-separating feeders for multiple cats: a validated tool against overweight
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
Putting an overweight cat on a diet in a household with several cats almost always runs into the same obstacle: the dieting cat ends up eating the slim cat's portion, while the slim cat stands unbothered in front of its own bowl. A study by Angela Witzel-Rollins, Maryanne Murphy, Cary Springer, Tamberlyn Moyers and Julia Albright, published in 2022 in the Journal of Feline Medicine and Surgery, evaluated an automatic feeder with individual recognition combined with split meals for cats in multi-cat households following a weight-loss programme (see the study). The pet-separating feeder eased the programme's day-to-day running and reduced food-seeking behaviour, though increasing meals to six a day rather than two did not speed up weight loss.
Contents · 5 sections
What a pet-separating feeder actually solves
The principle relies on individual recognition — a chip, an RFID tag or facial recognition depending on the model — which only opens the bowl to the authorised cat, staying locked for the others. That resolves two distinct problems at once: ration theft by the cat not on a diet, and stress in the dieting cat, which otherwise eats too fast for fear of being pushed off its food. The study also notes a drop in food-seeking behaviour among the cats followed, a sign that frustration linked to competition eases as much as calorie intake does.
Split meals: useful, but not a magic fix
The study's second strand tests whether increasing the number of meals, rather than the calories, helps manage hunger. The net result: moving from two to six daily meals did not change the rate of weight loss. Splitting meals is still worth doing for a cat's comfort and to cut down on repeated demands on the owner, but it doesn't replace the careful daily-ration calculation covered in our article on an overweight cat's weight-loss programme.
Choosing a model suited to a multi-cat household
Not every automatic feeder suits this use: a simple timer, useful for a single cat, solves nothing if a second cat can reach the same bowl. Check that the model physically locks access — a hatch that closes, not just a phone notification — and that recognition works without needing an extra battery-powered tag on the collar if your cat already wears a GPS tracker. Our general guide to automatic cat feeders compares gravity and programmable mechanisms for single-cat households, where this level of gear isn't necessary.
An investment worth putting in perspective
This type of feeder costs noticeably more than a standard model, but remains cheaper than prolonged treatment for weight-related complications. Find our full gear selection in the cat accessories section.
Frequently asked questions
Is a simple physical divider between two bowls enough?
It helps if the cats agree to stay on their own side, but nothing stops a mobile cat from switching bowls mid-meal. Locking access through individual recognition solves this more reliably.
Do meals really need splitting into six a day?
Not for the rate of weight loss, according to this study. Two to four well-measured meals are enough; splitting further is mainly a matter of comfort.
Does this feeder replace veterinary weight monitoring?
No. It makes the feeding programme easier to run, but calculating the ration and tracking the weight curve remain a vet's job.
An accessory from our shop for this use: Raised-edge silicone feeding mat for cats (€25.90) · the whole shop
For your cat, at Le Félin (same family, zero commission): Panier noir douillet pour chat (from €29.99)
This guide is part of Planète Pets’s Cats universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.
