A puppy, an adult and a senior dog under one roof are not three versions of the same feeder — they run on different clocks, different foods and different appetites, and trying to serve them as one group is what creates the chaos. The puppy needs frequent small meals on a growth formula and will happily steal anything left down. The adult needs measured portions that protect his waistline. The senior may eat slowly, prefer softer food, and do better with smaller meals that do not leave him uncomfortably full. The workable answer is three small routines that happen to share a kitchen, each with its own food, place and timetable.
What each life stage actually needs from the day
Puppies burn through energy and have small stomachs, so three or four evenly spaced meals suit them far better than two big ones, and those meals should be a puppy food formulated for growth rather than a share of the adult's bowl. Adult dogs usually settle well on one or two measured meals, with portion size adjusted to body condition rather than to how hopefully they look at you. Seniors vary the most: some keep a hearty appetite but need food that is easier to chew and digest, while others with aching joints or fading senses do better with smaller, more frequent meals and a calm, predictable feeding spot. Respecting those differences in food, frequency and pace is the whole foundation — the logistics below only protect a plan that is already right for each dog.
Separate the meals so nobody eats the wrong food
Feed in different places and pick bowls up when each dog finishes. A baby gate, a closed door, the puppy's pen or the senior's quiet corner all work; what matters is that the adult cannot wolf down calorie-dense puppy food, the puppy cannot mug the slow senior mid-mouthful, and nobody grazes from a bowl that was meant for different nutritional needs. Staggered start times help too — settle the senior first in his quiet spot, then feed the adult, then the puppy, whose meals include the extra midday and late feedings the others do not get. Store the three foods in clearly labeled containers, because three similar-looking bags or bins are an invitation for the wrong scoop in a hurry, and keep each dog's own measuring cup with its own food.
Build a timetable the whole household can run
Write out the day as one grid: each dog's meals, times, food and amount in a row, pinned where feeding happens. Include the puppy's extra meals, the senior's evening top-up if he has one, and who is responsible for each slot on workdays versus weekends. Note weights monthly — the puppy should be climbing steadily, the adult holding steady, and the senior watched for quiet loss that a thick coat can hide. When a sitter or grandparent steps in, that grid is the difference between your three routines surviving the weekend and everyone defaulting to one shared scoop. Digital or paper does not matter; shared and visible does. With KinsLe, Care Teams holds a separate schedule for each of them — the puppy's four duties, the adult's two and the senior's gentler routine — each assigned to a named person and ticked off with a timestamp when done.