The first moves: separation, assessment, vet
When a boarding dog goes off his food, starts coughing, vomits repeatedly or simply seems wrong, a well-run kennel's first step is to move him somewhere quiet and separate. Isolation protects the other guests if the cause turns out to be contagious, and it protects the ill dog, who gets rest and close watching instead of the noise of a full block. Staff should note what they have seen — appetite, temperature if they are equipped to take it, toilet, energy — and contact a vet for advice, either the kennel's own veterinary practice or yours if you have specified it. Ask before booking what triggers that call immediately rather than after a period of watching, and whether someone stays with or checks an isolated dog overnight. The answers reveal how much of the plan is real procedure and how much is improvisation.
How your other dog is handled
Housemates are the part owners forget to ask about. If your dogs are kennelled together and one is moved into isolation, the well one is suddenly alone in a strange run, which some dogs handle and some — particularly the follower in a bonded pair — find genuinely distressing. Ask whether the healthy dog can be kennelled within sight or sound of his companion, whether staff will add extra human time and walks to fill the gap, and whether feeding and any medication for the ill dog are managed completely separately so nothing is shared by mistake. Also ask the reverse question: if the illness is contagious, will your healthy dog be treated as a contact and monitored, and can he still go home on schedule or does the kennel advise a buffer? Getting this agreed in advance means nobody is inventing arrangements around a sick dog.
How and when you are told
You should hear about illness early, not in a summary at collection. Agree the contact order before you travel: at what point does the kennel message you — first sign, vet call, or diagnosis stage — and what happens if you cannot be reached, as on a long flight or somewhere without signal. Name a backup person who can take the call and, crucially, decide how much treatment you are authorising in advance and who may give that authorisation if neither of you answers. Put your vet's details, your dogs' insurance information if you have it, and known conditions or allergies in the kennel's hands at drop-off, not in a message thread they have to excavate. When you are told, expect specifics — what was seen, when, what the vet advised — and ask the kennel to keep updating on that same thread so the story stays in one place.
Questions that test the plan before it is needed
A short set of questions on your tour will show whether the illness plan is lived or theoretical. Where exactly is the isolation area, and can you see it? Who decides a dog needs the vet at two in the morning, and who drives him there? How are owners of dogs who shared a run or play group with a contagious case informed? How is an ill dog's medication kept apart from his housemate's? None of these questions should make a good kennel defensive; they deal with this regularly and usually welcome an owner who has thought it through. KinsLe Messenger keeps the kennel's updates about your unwell dog in his own per-pet conversation, so the vet summaries, photos and decisions sit in one continuous thread you can follow from wherever you are travelling.