# The growth line that is one dog's whole first year

> A hand-plotted weight curve on graph paper, steep then flattening, prints the shape of a puppy's first year rather than a single photograph of it.

August 18, 2026 · https://justog.club/stories/puppy-first-year-shirt

A line on graph paper, plotted by hand, rising sharply and then flattening out. `2.1 KG` marks
where it starts. `24 KG` marks where it ends. Month abbreviations run along the bottom. Four dog
silhouettes, each a little bigger than the last, sit along the base.

Anybody who's raised a puppy knows that shape before they read a single number.

## Why draw a line instead of printing a photograph?

Because a photograph shows one moment and a line shows the whole change, and the change is the
actual story of a puppy's first year.

A single photo of a fully grown dog can't communicate that the same animal once fit in two hands.
A photo of the puppy at eight weeks can't show what it becomes. The line does both at once — it's a
record of every stage existing in the same frame, which no single image of the same size can manage.
That's the entire case for a graph over a picture here: it's not a stylistic choice, it's the only
format that holds the whole first year in one glance.

## Why does the curve's particular shape matter?

Because steep-then-flat is the actual shape almost every puppy's growth takes, and printing that
real shape rather than a straight diagonal is what makes the graph feel true rather than decorative.

A puppy gains weight fastest in its first few months and the rate slows as it approaches its adult
size, usually somewhere around its first birthday depending on the animal. Plotting that honestly —
a steep early climb that bends and levels by autumn — is what separates a graph that reads as a real
record from one that's just an upward arrow with numbers stuck on it. The bend in the line is doing
almost as much work as the two endpoint weights.

## What do the two weights actually need to be?

Whatever the animal's own numbers were — the birth or arrival weight, and wherever the curve was
measured out to.

Two real, checkable figures are what make the graph a document instead of an illustration. `2.1 KG`
and `24 KG` only work here because they belong to one specific dog; the same shirt for a different
animal needs its own pair, not these ones borrowed for the general idea. [A number holds this kind
of specific, checkable weight better than an image can](/stories/numbers-as-a-design), the same
way a checkable fact carries more than a decorative flourish would.

## Does the graph have to track weight?

No — weight is the easiest thing to have actually recorded, but height, shoe size for the leash, or
any other measurement taken repeatedly across the year works the same way. What the format needs is
a quantity that was genuinely tracked more than once, so the curve reflects something that actually
happened rather than an invented trend.

### What if the dog arrived already grown?

Then the first-year growth curve isn't the right shape for that animal, because there wasn't one to
plot.

An adult rescue, a dog rehomed from another family, an animal whose early months nobody in the
current household witnessed — none of these have a puppy weight curve to draw. The honest version
for that story is a different plot: not birth weight to adult weight, but arrival to now, whatever
that period actually contains, with the arrival date itself standing in for the birth weight as the
[fixed point the rest of the graph counts from](/stories/adoption-day-shirt). The graph format
still works; what's plotted along it has to match what genuinely happened rather than what the
format usually assumes.

## Does this only work for dogs?

The curve mechanism applies to any animal with a documented growth stretch — a kitten, a rabbit, even
a horse's foal year — though the weight ranges and the shape of the curve differ by species, and only
the real numbers for the actual animal should go on it.

## Does it print well?

Yes — ruled graph paper and a single plotted line are close to the simplest chest artwork there is.

The grid lines want to be fine and pale rather than heavy, since a ruled background that's too bold
competes with the curve itself; the line and the four silhouettes are the elements that carry the
ink. One dark ink against a light garment holds the whole thing clearly — off-white, oatmeal or pale
grey all sit right behind graph-paper ruling. Keeping the month labels and endpoint numbers larger
than they'd appear on an actual sheet of graph paper is what keeps them legible at chest-print size.

## How do I get one made?

Describe the animal at [JustOG](/) — the two weights, and how many months the curve should span.
Pick a direction, drag the crop frame, see it composited on the real garment, and it's made to order
and shipped.

Designs other people have published are in the [shop](/shop).

A line that climbs fast, bends, and settles — 2.1 kilograms at one end, 24 at the other.