Start with a shared front page, then separate everything else
A handover for three dogs fails when it reads as one long document about a generic group. Your sitter does not care for a group; they care for three individuals in rotation, often under time pressure, often in poor light in a kitchen at night. Structure the pack so the first page covers only what is shared, and every dog-specific fact lives on that dog's own page, complete on its own, so the sitter can carry one page for one dog without cross-referencing the rest.
The front page holds the house and emergency layer: your contact details and when you will be out of reach, the backup person nearby who can step in, the veterinary clinic and after-hours service for all three, where food, leads, medicines, and cleaning supplies live, alarm and key arrangements, and the daily shape of the household, such as first let-out, feeding times, and lights-out routine. Anything that applies equally to all three belongs here once, not repeated with small variations across three pages where the variations will be missed.
Build each dog page to stand alone
Each dog page opens with identity at a glance: name in large clear type, breed or description, age, color, and a recent photograph, because a sitter describing a lost or injured dog over the phone needs that information instantly. Follow with feeding for that dog alone: what he eats, how much measured the way you measure it, where he is fed if the dogs are separated, and what happens to unfinished food.
Exercise gets its own clear block on each page, written for that dog's body and temperament. Replace vague phrases like a good walk with usable guidance: how long, how far if you track it, what pace suits him, whether slopes, stairs, swimming, or off-lead running are in or out, and what his signals look like when he has had enough. A young, powerful dog who needs a proper run before he settles and an older dog whose joints limit him to a gentle circuit cannot share an exercise instruction, and writing them separately protects both from the average of the two.
Medicines belong on the individual page too, exactly as labeled, with the time they are given, how you get that dog to accept them, and what to do and who to call if a dose is refused or a dog is sick shortly afterwards. Never rely on the sitter remembering which dog a medicine belongs to from a combined list on the fridge. If one dog has no medicines, write none clearly, so absence is a fact rather than an omission the sitter worries about.
Quirks are not decoration; they are the handling instructions in disguise. Note the dog who guards his bowl and must be left alone while eating, the dog who bolts through opening doors, the dog who is frightened of thunder, bicycles, or men in hats, and the dog who must not be greeted by visiting children until he has calmed down. For each quirk, add what actually helps: the phrase, distraction, or routine that works in your house, written as plainly as you would say it.
Make the pack usable in real conditions
Leave the pack printed even if you also share it digitally, with the pages in order in a single folder kept where care happens, usually the kitchen. Phones die and signals fail, and a sitter managing three dogs during a power cut needs paper that works. Walk through the pack in person before you leave if you possibly can, ideally while the sitter meets each dog, because questions surface during a walkthrough that never appear when someone reads alone and feels they should already understand.
A handover built this way respects both the sitter and the differences between your dogs, and it turns a complicated household into three clear jobs plus one shared routine. Sharing that same front sheet and three individual pages through KinsLe Care Pass lets your sitter open the right dog's routine on the spot without carrying your whole household file.