What your other pets actually understand
Your other pets do not grasp illness, prognosis, or farewell, and no preparation can teach them those ideas. What they do register, keenly, is change: her smell shifting, her sleeping more, your sadness, disrupted routines, and eventually her absence from the places she always was. So preparation is not lessons for them — it is stabilising everything around the change you cannot prevent. The pets most affected are usually those who sleep against her, follow her lead on walks, or take social confidence from her, including cats who chose her as their one trusted dog. A confident, independent housemate may need far less from you than a bonded shadow will.
Protecting their routines while hers must change
As the senior dog's care intensifies — vet trips, night waking, accidents, hand-feeding — keep the other pets' anchors fixed: same feeding times and places, same walk times, same sleeping arrangements, same one-to-one minutes with you. Resentment and anxiety in multi-pet homes usually come from this collateral disruption, not from grief itself. If she now needs a quiet room, make it her choice to retreat rather than exiling the others from shared space all day. Feed a pet who guards or pesters her separately so her last months are peaceful, but keep group rituals she still enjoys, like everyone settling in the same room in the evening, intact for as long as she seeks them.
Time together now, on their terms
Let companions be with her in the ordinary ways they always have — lying nearby, grooming, short garden pottering — and resist separating them for tidiness or worry unless she is snapping from pain or they are overwhelming her. These unremarkable hours are the preparation: her presence winding down gradually is gentler for them than a dog who is simply there one morning and gone by evening. If she has a planned goodbye at the vets or at home, ask the vet what they recommend about the other pets being present or seeing her afterwards; many animals settle faster after calmly sniffing a body than after an unexplained disappearance, but a pet who is highly reactive may do better with a blanket carrying her scent instead.
The first days after: what adjustment can look like
Expect a range: searching the house, waiting at her spot, appetite changes, clinginess, quiet withdrawal, or — disconcertingly — apparent indifference. All of these can be normal settling, usually easing over days to weeks as new routines form. Keep to the protected schedule, offer the searching pet company at the times they used to be together, and let them keep access to her bedding for a while before washing it, since her fading scent is a gentler transition than its sudden removal. Do not rush to fill her space with a new animal for their sake; companions adjust to a smaller household far better than to a stranger arriving while the home still smells of her.
When a surviving pet needs extra help
See your vet if a surviving pet stops eating for more than a day or two, loses weight, grooms or paces compulsively, becomes newly aggressive, or shows no easing of distress after a few weeks, because prolonged grief-like behaviour sometimes masks illness that stress has unmasked. Keep notes on appetite and behaviour from the day she goes, so you can describe the trajectory accurately. When you are ready, gathering her photographs and the story of her life in KinsLe through Memorial Accounts gives the whole household — people and the routines you rebuild with the pets who remain — a settled place where she is remembered.