The First 30 Days With a New Puppy: What to Do, Buy, and Track

Anna & Bulka · founders of PetCare · July 2, 2026

Bringing home a puppy is one of those moments that's pure joy for about an hour — and then the questions start. When's the next vaccine? How much should they actually eat? Is this poop normal? Where did I put the paperwork from the breeder?

A few months in, we switched vet clinics — and somewhere in the handover, the reminder for our dog Bulka's parasite tablet just never came. We didn't notice until weeks later, by which point he'd been unprotected for about half a month. Nothing came of it, thankfully. But that quiet oh no — the gap you don't see until it's already open — is the part of puppy care nobody really warns you about.

The thing nobody tells you is that the first month isn't hard because puppies are complicated. It's hard because everything happens at once, and most of it is stuff you only need to get right early. Miss the vaccine window and you're playing catch-up. Skip the weight log and you won't notice a problem until it's obvious.

So here's the plan I wish someone had handed me on day one — a simple, week-by-week map of the first 30 days. Nothing fancy. Just the things that matter, in the order they matter.

Before they come home: the short shopping list

You don't need half the pet store. You need a setup that keeps your puppy safe, contained, and comfortable for the first few weeks:

One quiet tip: pick a single "puppy zone" for the first week. A whole house is overwhelming for an eight-week-old. A small, gated area with their crate, water, and pads makes everything — sleep, potty, settling — dramatically easier.

Day one: keep it boring (on purpose)

The best first day is a calm one. Resist the urge to invite everyone over.

You're not training a service dog this week. You're teaching one thing: home is safe.

The first week: the vet visit that sets up everything

Book a first vet appointment within the first few days, even if your puppy looks perfectly healthy. This visit does a lot of quiet work:

Bring whatever paperwork came with your puppy. And before you leave, write down two things: the date of the next visit and the date the next vaccine is due. Those two dates are the backbone of the whole first year.

Vaccinations: the one timeline you can't wing

This is the part people get wrong, and it's the part with real consequences. Puppy vaccines come in a series, spaced a few weeks apart, usually starting around 6–8 weeks and running until about 16 weeks — followed by boosters. Until that series is complete, your puppy isn't fully protected, which affects where it's safe to take them.

You don't need to memorize it. You need to write it down once and get reminded before each one. If you want a clean reference, this free puppy vaccination schedule lays the timeline out by age — no signup needed.

The rule of thumb: every time you finish one vaccine, leave the vet with the date of the next one already in your calendar.

Feeding: how much is "the right amount"?

Puppies grow fast and eat more (relative to their size) than adult dogs — but "more" has limits, and the number on the back of the bag is a starting point, not gospel. It depends on age, expected adult weight, and the specific food.

A few principles that hold up:

If you want a quick sanity check on portions, a pet food calculator will give you a daily gram estimate by weight and food type — handy in those first weeks when everything is guesswork.

Growth: weigh weekly, it's your early-warning system

Here's an underrated habit: weigh your puppy once a week and write it down. A steady upward curve is one of the clearest signs everything is on track. A stall, a dip, or a sudden jump is something you want to catch early, not discover at a checkup two months later.

You don't need a fancy scale. For small puppies, weigh yourself holding them, then weigh yourself alone, and subtract. Plot the numbers and you've got a growth curve.

Pair the weight with body condition — a quick hands-on check of ribs, waist, and tummy tuck that tells you whether your puppy is lean, ideal, or carrying too much. If you've never done it, the body condition score guide walks through it in a minute. Together, weight + body condition beat either one alone.

Paperwork: the boring thing that saves you later

In the first month you'll accumulate a surprising pile: vaccination records, the microchip number, deworming dates, the breeder's notes, maybe pedigree papers. It feels trivial — until you're at a border crossing, a new vet, a boarding kennel, or a grooming appointment — and someone asks for proof you don't have on you.

Do future-you a favor: keep it all in one place, and keep a digital copy. Photos of every document on your phone is the bare minimum. A single record you can export to PDF is even better. The day you need it, you'll really need it.

Bulka the toy poodle as a puppy, sitting on the floor at home
This is Bulka — the dog whose missed parasite tablet started all of this. That kind of small slip is exactly why we ended up building a tool for it.

A calmer first month

If the theme of this whole list is one thing, it's this: the first 30 days aren't about doing everything perfectly. They're about setting up the few things that compound — the vaccine timeline, the weight curve, the records — so the rest of the year is calm instead of catch-up.

Full disclosure: keeping all of this straight is exactly the problem we kept failing at with our own dog (see: Bulka's missed parasite tablet), so we built a small free app for it — PetCare. It keeps your pet's vaccines, meds, weight, and documents in one place and reminds you (by email or Telegram) a few days before something's due. The vaccination, feeding, and body-condition guides linked above are free and need no signup — use them whether or not you ever sign up for anything.

But honestly? Whatever you use — an app, a spreadsheet, a notebook on the fridge — the system matters more than the tool. Pick one, start on day one, and your first month with a new puppy gets a whole lot calmer.

Quick first-30-days checklist