Crowded at the top, open at the bottom.

Query: “dinosaur coloring book for kids ages 4-8” · paperback · Amazon.com

Short answer: yes, but not with this exact book.

The first four spots are held by titles from 2005, 2019 and 2020 carrying 872 to 2,482 reviews. You will not out-review them; treat those slots as furniture.

What matters is further down: two books published in February and March 2026 already sit on page one with 3 and 16 reviews. The listing page is not closed to newcomers — it just doesn't hand you the top.

Those two are six and seven months old, so the new-release boost Amazon gives fresh listings has long since worn off — they hold those spots on their own. Enter on a narrower query, price at the top of the range, and expect a slow shelf rather than a windfall.

Who holds page one

Title	Price	Rating	Reviews	BSR (Books)	Published	Pages	Who
Dinosaurs Coloring Book (Dover)	—	4.7	2,482	5,526	Jul 2005	32	Dover
Dinosaur Coloring Book (Silly Bear)	$6.49	4.8	872	6,207	Nov 2019	102	Press
For Little Dino Lovers	$6.51	4.8	166	6,682	May 2025	128	Cottage Door
Coloring Fun and Awesome Facts	$6.35	4.8	1,173	10,146	Sep 2020	112	Z Kids
Dinosaur Color By Numbers	$9.29	4.8	2,170	40,541	Mar 2020	88	Press
Coloring Activity for Ages 4–8	$10.90	4.7	286	77,724	Oct 2020	111	Indie
The Great Dinosaur Coloring Book	$9.99	4.5	16	80,465	Mar 2026	106	Indie
A Fun Prehistoric Adventure	$9.99	5.0	3	82,847	Feb 2026	100	Indie
Realistic, Fun, Adorable Illustrations	$6.99	4.8	1,092	102,605	Oct 2022	105	Indie
Dinosaurs for Boys and Girls	$5.99	4.8	130	191,061	Sep 2024	108	Indie

What the numbers say

Roughly 20,000 books answer this query. The niche is not empty and never will be. That is a reason to go narrower, not a reason to walk away.
Reviews, not quality, guard the top. Four of the top five carry over 800 reviews each and were published between 2005 and 2020. A new book competes on placement and freshness, never on social proof.
Amazon still seats newcomers on page one. Two books from this spring hold spots with 3 and 16 reviews. That is the single most useful fact in this report.
Publishers sit at $6.35–6.51, the newest indie books at $9.99. The two 2026 arrivals charge the most in the list and rank anyway, so a high price is not what keeps a new book off the page. What a lower price buys here, this snapshot cannot tell you — the $5.99 and $6.99 indie titles differ from them in age and review count too.
102–128 pages is the shape of this shelf. The one 32-page book is Dover's, from 2005, coasting on two decades of reviews. Do not copy it.
Everyone fights in the same subcategory — Children's Dinosaur Books. Top of the page sits around #32–42 there; the 2026 newcomers sit around #360–370. That gap is what one year of steady sales buys.

What I would actually do

Enter sideways

Not “dinosaur coloring book”. Pick the narrow door: a single dinosaur, dinosaurs plus facts, color-by-number, or dinosaurs crossed with something else. This report did not measure those doors — name the three you like and I will run the same numbers on them.

Price at $9.99

The two books that arrived this year charge $9.99 and rank fine, so the top of the range is not a handicap. Keep the royalty until you have evidence that cutting price moves you.

Build for 100–110 pages

It matches the shelf and keeps printing cost sane. Single-sided pages, because bleed-through is what one-star reviews in this category are made of.

Expect small, not zero

A BSR near 80,000 works out to something like one or two copies a day by the public calculators — an order of magnitude, not a forecast. Plan on a shelf that compounds, not a launch.

Where these numbers come from, and what they are not

Every figure above was read off Amazon.com on 17 September 2026: the organic results for that query with sponsored slots removed, then each listing's own page for rank, publication date and length. Prices are US list prices at that moment and move constantly. Sales-per-day is an estimate derived from public BSR calculators, not a number Amazon publishes — treat it as an order of magnitude. One snapshot is not a trend: a rank read on a Tuesday afternoon can differ from the same rank on Sunday. Only paperbacks were counted — Kindle and hardcover editions of the same books rank on their own scales. The Dover title shows no price because its listing sells through third-party sellers rather than Amazon directly. “Indie” means the listing shows no traditional publisher, which is the closest public signal for a self-published title and will occasionally mislabel a small press.