The short answer: a small handful, not a bowlful
For a typical adult rabbit, picture an egg cup of pellets, or a modest handful, once a day — that is the general scale of the ration. A large or giant breed may warrant a little more, and a small dwarf breed a little less, but in every case the portion should look surprisingly small next to the mountain of hay the same rabbit works through. Many owners serve pellets in the morning or split the ration across two sittings, which is fine; the daily total is what matters, not the ceremony around it. If you are scooping from the bag by eye, decant the day's portion into a small pot once and feed from that, so generosity cannot creep.
Why pellets are deliberately the minor food
Pellets were designed as a concentrated top-up: vitamins, minerals and protein packed into a form that guarantees a rabbit gets nutrients that variable hay and greens might miss on a given day. Their concentration is exactly why they must stay minor. A rabbit filling up on pellets feels full on a fraction of the chewing time hay demands, so tooth wear drops, gut movement slows, and weight creeps on — the familiar round pet rabbit with soft droppings is usually a pellet-fed rabbit. Treat pellets the way you would a vitamin supplement for yourself: valuable in the right amount, counterproductive as the basis of the diet.
Adjusting for age, size and condition
Young growing rabbits are the exception to the small-ration rule and are commonly offered more generous pellets alongside hay while they are building bone and muscle, with the amount stepping down as they reach adult size. At the other end of life, a slim senior rabbit who struggles to hold weight may also need a somewhat larger ration or a pellet formulated for his stage, best decided with a vet who knows his condition. Condition is your everyday guide for adults: you should be able to feel ribs under a light covering when you stroke his sides. If you cannot, trim the ration gradually and check treats and sugary vegetables before blaming the measured handful.
Fitting pellets around hay and greens
Build the day in the right order of importance: hay available constantly and refreshed daily, a generous handful of safe leafy greens, water always, and the pellet ration as the small finishing piece. Serve pellets after a hay refresh at an active time of day and many rabbits will graze hay first while they wait, which is the habit you want. Keep the brand and type consistent where you can, and if you change pellets, mix old and new over a week or so rather than swapping overnight, since sudden food changes unsettle rabbit digestion even when both foods are sound. Store the bag sealed and cool so the ration you measured is still worth eating.
Portion problems worth a conversation with the vet
A rabbit gaining steadily despite a measured ration, producing lots of uneaten soft caecotrophs, or leaving hay untouched while waiting for pellets is showing you a diet out of balance that is worth reviewing, and a vet or nurse weight check gives you an objective starting point. Equally, a rabbit who suddenly ignores pellets he used to enjoy, along with eating less overall, needs examining rather than a richer food to tempt him. For the ordinary healthy rabbit, the routine stays simple when KinsLe Care Teams records the single daily portion as an assigned task, so the egg cup is served once and marked done rather than served twice by mistake.