First Month With a New Cat in Hong Kong: Isolation, Vaccines, Deworming, Litter Trays and a Socialisation Timeline
The short answer: a new cat's first month at home — Day 1, one room to itself + book the vet; at 8 / 12 / 16 weeks, three FVRCP shots; before 6 months, monthly deworming and monthly flea medication (indoor cats included); cats don't need a rabies shot (unless you are taking one out of Hong Kong), and there is no licence; litter trays = number of cats + 1; socialisation at 12–16 weeks; kittens eat 4–6 meals a day, and you want them trying different textures (mousse, canned, dry) so they don't turn fussy later. Timeline table below.
A cat's first month is not a dog's. No licence, no rabies shot — but cats come with their own list: how many litter trays, hiding spots, somewhere high to sit, a range of food textures. Get those wrong and they become the roots of "peeing everywhere", "fussy eater" and "two cats fighting". This piece turns the standard advice Hong Kong vet clinics give new cat owners into a timeline and a checklist, from Day 1 to 6 months. If you'd rather not keep due dates in your head, use the deworming, vaccination and check-up schedule (pick "cat").
Your first-month checklist
| When | What to do | Watch out for |
|---|---|---|
| Day 1 | One room to itself (its own litter tray, bowls and hiding spot); book the first vet check-up | A new cat hiding for the first few days is normal — don't drag it out |
| Days 1–14 | Separation and observation: sneezing, eye or nose discharge, diarrhoea, vomiting, not eating, low energy | Any one of these → vet straight away; if you have cats at home, test for FIV / FeLV before they share space |
| 8 weeks | First FVRCP shot; start monthly intestinal deworming and monthly flea medication | Indoor cats need flea prevention too — fleas come home on shoes and trousers |
| 12 weeks | Second shot; socialisation window (12–16 weeks): touching eyes, ears, nose and paws, getting used to the carrier and to nail trims | This is the stretch for trying different food textures |
| 16 weeks | Third shot (yearly boosters after that) | Only let it properly share space with the other cats once the course is done |
| 4–6 months | Talk to your vet about desexing (for a female, before the first heat); deworming moves to every 3–6 months | Desexing a male can cut down on spraying and fighting |
| 6 months | Meals down to 2–3 a day; review how many litter trays you have and where they sit | Cats + 1, spread out, and never next to the food |
Cats hide discomfort well and won't tell you when something is off. In the first month, looking at the poop every day is the best health check you have — run it against the cat stool score chart; grade 3 is the one you want.
① Isolation: one room, one set of everything
Whether or not you have other animals, a new cat should start in one room: its own litter tray, water bowl, food bowl and a hiding spot (a cardboard box does the job). If there are other cats or dogs, that isolation has to be complete, 7–14 days, watching for sneezing, eye or nose discharge, diarrhoea, vomiting, appetite and energy. Before they meet, it is worth having the vet test for feline immunodeficiency virus (FIV) and feline leukaemia (FeLV) — both pass from cat to cat. Introduce them slowly: scent through a closed door first, swap the bedding, then meet through a gate, and only then let them share the space.
② Vaccines: 8 / 12 / 16 weeks, and no rabies shot for cats
| Shot | When | What it covers |
|---|---|---|
| Core vaccine, shot 1 | 8–10 weeks | FVRCP, three in one: panleukopenia, viral rhinotracheitis (herpes), calicivirus |
| Core vaccine, shot 2 | 12 weeks | Same as above |
| Core vaccine, shot 3 | 16 weeks | Same as above; fully vaccinated one to two weeks after |
| Booster | Yearly after that | Some vets stretch it to 3 years, following WSAVA |
| Rabies shot | Not needed | Unless you are doing export paperwork; Hong Kong law only covers dogs |
| Feline leukaemia (FeLV) | Depends on the risk | Ask your vet if the cat goes outdoors, or you have a multi-cat home |
③ Deworming and fleas: indoor cats too
A cat's intestinal worms (roundworm, hookworm, tapeworm) come from the mother, from milk, from eggs in soil, or from swallowing a flea while grooming — which is exactly why deworming and flea prevention are one package; and these worms can pass to people. A mild infection may cause no obvious signs, so don't wait until you can actually see worms.
| Medication | How often | When to start | Watch out for |
|---|---|---|---|
| Intestinal deworming | Monthly before 6 months; every 3–6 months after that | 8 weeks | Cats swallow fleas while grooming → tapeworm, so deworming and flea prevention go together |
| Fleas (and ticks) | Monthly | 8 weeks | Spot-on; ⚠️ never use a dog spot-on (some ingredients are toxic to cats); Hong Kong is damp, and flea eggs hatch indoors just fine |
| Heartworm | Optional, monthly | 4–5 months | Heartworm in cats is less common but it does happen — ask your vet |
④ Feeding: 4–6 meals, and try different textures
- Kittens eat 4–6 meals a day; 2–3 after 6 months
- Let it try different textures — mousse, canned, dry, freeze-dried; a kitten used to several textures is far easier later on when you change food, move to a prescription diet, or need to give medication. This is the one thing plenty of cat owners wish they had done
- Cats aren't natural drinkers: more water bowls, a fountain, wet food — looking after the urinary tract starts in month one
- Change food over 7–10 days, mixing slowly; check whether the poop looks right with the cat stool score chart
Do kittens need supplements? Usually not; if something is obviously off (loose stools, hairballs) then pick by need, and always a cat-specific formula. See how to choose cat supplements in Hong Kong.
⑤ Socialisation: 12–16 weeks
- Handling — gently handle the area around the eyes, ears, nose, lips, nails and paws every day, so nail trims, medication and vet visits aren't a battle later
- The carrier — leave the door open day to day and put snacks inside; the carrier becomes a safe place, not something your cat only sees before a vet visit
- Positive reinforcement — reward straight away for using the litter tray and scratching the post instead of the sofa; no punishment, a cat won't connect the punishment with the behaviour
⑥ Home checklist: cats want different things from dogs
- ☐ Litter trays: cats + 1, spread out, never next to the food
- ☐ Cat tree or high spots (a cat only feels safe when it can get up high)
- ☐ Hiding spots (cardboard boxes, cat beds)
- ☐ Scratching posts (one upright, one flat; if you don't want the sofa scratched, give it an alternative)
- ☐ Toys (10–15 minutes of wand play a day burns energy and cuts down the night yowling)
- ☐ One set per cat — competing over resources is a common cause of conflict between cats in a multi-cat household
- ☐ Window screens or netting (Hong Kong is high-rise, and falls from windows and balconies are a real risk)
Dog owners, this is your version: new dog, first month checklist.
Common questions
When do kittens get their shots?
The first core vaccine shot (FVRCP, three in one) at 8 weeks, the second at 12 weeks and the third at 16 weeks, then a yearly booster (your vet may stretch it to 3 years).
Do cats need a rabies shot?
Hong Kong law does not require a rabies shot for cats, unless you are doing export paperwork. Dogs do have to have one (by 5 months old, plus a licence).
How often does a cat need deworming?
Monthly intestinal deworming before 6 months, then every 3–6 months; flea medication monthly (indoor cats included — fleas come home on people). Heartworm medication is optional for cats; ask your vet.
How many litter trays do I need at home?
Number of cats + 1. Two cats, three trays, spread out, never next to the food and water. Each cat should also have its own cat tree, hiding spot and scratching post — that is how you avoid the competition.
How long does a new cat need to be isolated?
If you have other animals at home, fully separated for 7–14 days, in one room with its own tray and bowls. Watch for sneezing, eye or nose discharge, diarrhoea, vomiting and not eating; if any of it shows up, straight to the vet.
NanaPaws' chief taste tester and gatekeeper. NanaPaws is an authorised Zesty Paws retailer in Hong Kong, with the batch expiry date listed on every item; free SF Express delivery on orders of HK$300 or more. Sources: the new-pet care guidance Hong Kong vet clinics commonly give out, WSAVA 2024 vaccination guidelines, ESCCAP 2025 parasite guidelines, the Agriculture, Fisheries and Conservation Department.
This article is general pet care information and is not veterinary advice. Vaccination, deworming and medication schedules should follow your own vet; if your cat has ongoing symptoms, please speak to a vet.
