Cats hide what is wrong. This is how you read them anyway.
Feeding, daily care and the signals worth acting on, written for the animal rather than the stereotype. Cats are obligate carnivores with a weak thirst drive and an unusual talent for concealing pain, and almost every recommendation here follows from those three facts.
The risks invert as a cat ages. In the first year the danger is under-feeding a growing animal; in middle age it is quiet weight gain; after seven it is unnoticed weight loss.
Kitten
Birth to 12 months
Feeding approach
Growth formula, 3-4 meals daily
Kittens roughly triple their birth weight in the first weeks and need a calorie-dense growth diet to do it. Cats are obligate carnivores, so taurine, preformed vitamin A and arachidonic acid have to come from the diet rather than being made from plant precursors.
Feed a diet labelled for growth or for all life stages
Weaning runs from about four to eight weeks, alongside queen or replacer milk
Never feed cow milk, which causes diarrhoea in most kittens
Handle, groom and carrier-train through the socialisation window of two to seven weeks and beyond
Adult
1 to 7 years
Feeding approach
Maintenance formula, measured portions
Energy requirements fall sharply after neutering while appetite does not, which is why the year after neutering is when most cats put on the weight they carry for life. Free-feeding a bowl of dry food is the single most common cause.
Switch from growth to adult maintenance at around twelve months
Measure the day’s ration in the morning and feed from it in several small meals
Deliver part of it through puzzle feeders so eating takes effort
Weigh monthly: a 500 gram gain on a four kilo cat is over ten per cent of body weight
Mature and senior
7 years and older
Feeding approach
Watch weight in both directions
From around seven the questions change from preventing gain to catching loss. Unintended weight loss with a normal or increased appetite points towards hyperthyroidism or diabetes, and gradual loss with reduced appetite towards kidney disease or dental pain.
Ask about twice-yearly check-ups with blood pressure, kidney and thyroid screening
Warm, easy-to-reach beds and low-sided litter trays matter more than any supplement
Any change in a senior cat’s appetite or drinking is worth a call, not a wait-and-see
02 / Daily care
Water, trays, height and the things cats will not ask for.
Most of what makes a cat comfortable is environmental, cheap and entirely within your control. It is also the part most commonly set up for the owner rather than the cat.
Hydration is the whole game
Cats evolved from desert ancestors and have a weak thirst drive, so they run at a mild water deficit on dry food alone. Chronic kidney disease and lower urinary tract disease are both extremely common in cats, and water intake is one of the few levers owners control directly.
Include wet food, which is roughly seventy to eighty per cent water
Use wide, shallow bowls so whiskers do not touch the sides
Place water away from food and away from the litter tray
Many cats drink more from a fountain, but a second still bowl in another room is worth trying first
Feeding stations and multi-cat homes
Cats are solitary hunters, not a pack, and eating shoulder to shoulder is a stressor rather than a social occasion. In multi-cat homes, competition at a shared bowl often shows up later as one cat gaining and another quietly losing weight.
One feeding station per cat, in separate places rather than side by side
Feed on raised surfaces where a nervous cat can see the room
Microchip-activated feeders solve theft when one cat is on a prescription diet
Litter trays, and the plus-one rule
Litter tray problems are a leading reason cats are surrendered, and most of them are housekeeping problems rather than behaviour problems. The standard is one tray per cat plus one spare, in different locations.
Unscented clumping litter at a depth of three to five centimetres suits most cats
Scoop at least once a day and change fully on a regular schedule
Large, uncovered trays are preferred by most cats, whatever the packaging suggests
Never place trays next to food, in a cupboard, or beside a noisy appliance
Enrichment and vertical space
A cat with nothing to climb and nothing to hunt will find something else to do with that energy, usually at three in the morning or on your furniture. Height is not a luxury for cats, it is how they feel safe.
Cat trees, shelves and window perches give escape routes and vantage points
Two short play sessions daily with a wand toy, ending with a catch and a meal
Rotate toys weekly rather than leaving everything out permanently
Scratching posts must be tall enough for a full stretch and stable enough not to wobble
Grooming and teeth
Short-haired cats manage most of their own coat care, but longhaired cats cannot keep up and mats form fastest in the armpits, behind the ears and along the back legs. Dental disease is as common in cats as in dogs and much easier to miss.
Brush longhaired cats daily and shorthaired cats weekly
Never cut a mat out with scissors, since cat skin is thin and tears easily
Brush teeth with cat toothpaste if you can build up to it, starting with a taste on your finger
Increased grooming to the point of bald patches is a stress and pain signal, not fastidiousness
Household hazards
Some of the most dangerous things in a cat home are not food. Lilies are the clearest example: every part of a true lily, including pollen brushed onto the coat and the water in the vase, can cause fatal kidney failure.
No lilies in the house at all, and treat any exposure as an emergency
Never give human painkillers: paracetamol and ibuprofen are lethal to cats
Keep string, tinsel, hair ties and dental floss out of reach, as linear foreign bodies need surgery
Onion, garlic, chives, alcohol, raw dough, chocolate and caffeine are all off the list
03 / Best cat foods
The food types that earn their place in the bowl.
Formats rather than brands, because the format is what determines moisture, calorie density and how the food can be fed. Most cats do best on a combination rather than a single choice.
01
Complete wet food, pâté or chunks in gravy
What it does well
Around seventy to eighty per cent moisture, which raises total water intake without the cat having to choose to drink. That makes it the most useful everyday format for cats prone to urinary crystals, cystitis or early kidney disease, and the strong smell keeps interest up in older cats whose appetite is fading.
Watch for: Once opened it spoils quickly, and dental benefit is minimal, so it does not remove the need for tooth brushing.
02
Complete dry food, fed as measured portions
What it does well
Shelf-stable, easy to weigh accurately and the only format that works in puzzle feeders and timed dispensers. Feeding a measured dry ration through foraging toys turns eating into activity, which helps both boredom and weight control.
Watch for: The low moisture content is the drawback. Pair it with at least one wet meal a day rather than feeding dry alone, and never leave the bowl permanently full.
03
Life-stage formulas: growth, maintenance, senior
What it does well
Calorie density, protein level and mineral content are matched to what the cat is actually doing. A kitten formula supports rapid growth, an adult maintenance formula stops that same density becoming fat, and senior diets ease the phosphorus and protein balance as kidneys age.
Watch for: An all-life-stages label is formulated to the more demanding growth profile, which makes it richer than a neutered indoor adult usually needs.
04
High-protein, moderate-fat formulas
What it does well
Cats use protein for energy in a way dogs do not, and adequate high-quality protein protects lean muscle mass. This matters most in seniors, where muscle loss is easy to mistake for normal ageing, and in weight-loss plans where the aim is to lose fat rather than muscle.
Watch for: Higher protein is not automatically better in cats with diagnosed kidney disease. Change protein levels for a diagnosed cat only on veterinary advice.
05
Therapeutic veterinary diets
What it does well
Urinary, renal, gastrointestinal, weight-management and hydrolysed-protein diets are formulated to specific mineral, phosphorus, fibre or protein targets, and they are one of the few nutritional interventions with genuine clinical evidence behind them. A urinary diet can dissolve certain stone types outright.
Watch for: These are prescribed for a diagnosis. Feeding one speculatively, or to the wrong cat in a multi-cat house, can do real harm.
06
Freeze-dried and air-dried complete diets
What it does well
Highly palatable and useful for fussy eaters and for cats that need tempting after illness. Rehydrating before serving brings the moisture content close to wet food while keeping the convenience of a shelf-stable product.
Watch for: Only worth using if the label states it is complete and balanced. Handle raw-style products with the same hygiene you would give raw meat, especially in homes with young children or anyone immunosuppressed.
07
Novel and hydrolysed protein diets
What it does well
The only reliable way to investigate a suspected food allergy is a strict elimination trial of eight to twelve weeks on a single novel protein or a hydrolysed diet, followed by a deliberate rechallenge. Nothing else, including blood and hair testing, gives a usable answer.
Watch for: The trial only works if absolutely nothing else passes the cat’s lips, including treats, flavoured medication and a neighbour’s kindness.
08
Treats, and what not to feed
What it does well
Treats are useful for carrier training, medication and building trust with a nervous cat. Keep them under ten per cent of daily calories and use single-ingredient options such as freeze-dried chicken or a few flakes of plain cooked fish.
Watch for: Dog food long term causes taurine deficiency and heart disease. Cow milk causes diarrhoea in most adult cats. Raw fish fed regularly can destroy thiamine.
04 / Signs to watch for
What to act on, and how quickly.
Sorted by urgency rather than by body system, because the only question that matters at the time is whether this waits until Monday.
Same hour
Go now, do not wait for morning
A male cat straining in the tray with little or no urine
Urethral obstruction. It is painful, it is common in male cats, and it becomes fatal within roughly twenty-four to forty-eight hours. Crying in the tray, repeated visits and licking at the genitals are the giveaways.
Open-mouth breathing or laboured breathing at rest
Cats do not pant to cool down. Open-mouth breathing, rapid shallow breaths or effort from the abdomen usually means fluid or air around the lungs and needs immediate care.
Sudden hind-leg weakness with crying and cold paws
Arterial thromboembolism, a clot lodging where the aorta divides. It is extremely painful and often the first visible sign of underlying heart disease.
Any contact with lilies
Eating the plant, chewing a leaf, drinking vase water or licking pollen off the coat can all cause acute kidney injury. Treatment is time-critical and works best before symptoms appear.
Not eating for twenty-four to forty-eight hours
Especially in an overweight cat, where a short period without food can trigger hepatic lipidosis. Appetite loss in cats is never something to wait out for a week.
Seizures, collapse, or a suspected poison or medication
Bring the packaging. Paracetamol, ibuprofen, permethrin flea products sold for dogs, and antifreeze are all emergencies in cats.
This week
Book a consult within a few days
Losing weight while eating well
A classic pattern for hyperthyroidism and diabetes in cats over seven. Both are very treatable and both do damage while they go unnoticed.
Drinking and urinating noticeably more
Track it if you can, since owners usually sense the change before they can measure it. Kidney disease, diabetes and hyperthyroidism all present this way.
Urinating outside the tray
Rule out medical causes before treating it as behaviour. Cystitis and arthritis both make the tray an unpleasant or difficult place to be.
Hesitating before jumping, or stopping altogether
Osteoarthritis is present in most cats over twelve and is significantly under-diagnosed, because cats show it by doing less rather than by limping.
Bad breath, drooling, or dropping food
Dental and gum disease is painful long before a cat stops eating. Cats hide oral pain remarkably well.
Over-grooming, bald patches or scabs
Usually parasites, allergy, pain or stress rather than a habit. The pattern of hair loss tells a vet a great deal.
Next visit
Worth raising at the next check-up
Vomiting more than once or twice a month
Frequent vomiting is common in cats but it is not normal, and it should not be written off as hairballs without a look at diet and gut health.
A gradual change in sociability
A cat that has started hiding, sleeping in new places or objecting to being touched is often telling you something hurts.
Cloudiness, squinting or a change in eye colour
Slow eye changes are easy to miss in a familiar face and can point to blood pressure problems in older cats.
Snoring, or a new sound while breathing
Worth mentioning even when the cat seems entirely well, especially in flat-faced breeds.
Seeing something on this list?
If it is on the emergency list, go to a veterinarian now. For everything else, send us the pattern you are noticing and a Pexpert will help you work out what it points to and what to ask.
Paradigm Pet Professionals provides educational guidance and second-opinion review. It does not replace hands-on examination, diagnosis or emergency treatment by a licensed veterinarian in your area.
