Free illustrations for pet blogs: use them, just credit us
By Josh · Reviewed and updated: 2026-09-21
Every illustration on this page was drawn for this site, based on clinical body condition scoring standards — no stock photos, no AI filler. If you write about pet nutrition or body condition, you can use any of them in your article for free. The only ask: keep the credit line and link back to this site.
Coverage note: we now have four illustrations — including a dog body condition waist-check diagram (added September 2026). More are on the way — email contact@petportioncalc.com if you need a specific one.
https://petportioncalc.com near the image or in your resources section.
1. Cat waist check — top view
A side-by-side comparison of two cats seen from directly above: one with a visible waist behind the ribcage, one without. The single most-shared kind of image in body condition articles.
Pairs well with articles about feline obesity, portion control and body condition scoring. Used on our cat body condition page.
Embed this image
Copy this snippet — the credit link is built in:
<a href="https://petportioncalc.com/cat-body-condition-score"><img src="https://petportioncalc.com/waist-check.png" alt="Cat waist check from above: healthy vs overweight" style="max-width:100%;height:auto"></a><p style="font-size:12px">Illustration: <a href="https://petportioncalc.com">PetPortionCalc.com</a> (CC BY 4.0) — <a href="https://petportioncalc.com/free-resources">free-resources</a></p>
Download this image (PNG/JPG) — or use the embed snippet above.
If you download instead, copy this credit: Illustration: PetPortionCalc.com (CC BY 4.0) with a link to this site.
2. The primordial pouch — not fat
Many owners mistake the loose skin flap on a cat's belly (the primordial pouch) for excess weight. This illustration shows a lean cat with a prominent pouch, with the anatomy explained.
Pairs well with articles about feline weight myths and the primordial pouch. Used on our cat body condition page.
Embed this image
Copy this snippet — the credit link is built in:
<a href="https://petportioncalc.com/cat-body-condition-score"><img src="https://petportioncalc.com/cat-primordial-pouch.jpg" alt="Lean cat with a primordial pouch: the pouch is loose skin, not fat" style="max-width:100%;height:auto"></a><p style="font-size:12px">Illustration: <a href="https://petportioncalc.com">PetPortionCalc.com</a> (CC BY 4.0) — <a href="https://petportioncalc.com/free-resources">free-resources</a></p>
Download this image (PNG/JPG) — or use the embed snippet above.
If you download instead, copy this credit: Illustration: PetPortionCalc.com (CC BY 4.0) with a link to this site.
3. How long a bag of dog food lasts — by weight
A bar chart comparing how long a 30 lb bag lasts for dogs of different body weights, from a 5 kg dog (122 days) to a 40 kg dog (26 days). Based on a standard 350 kcal/cup maintenance food, calculated for neutered adult dogs of typical activity. The numbers come from the feeding calculation on this site.
Pairs well with articles about feeding costs, bulk buying and food freshness. Used on our bag duration page.
Embed this image
Copy this snippet — the credit link is built in:
<a href="https://petportioncalc.com/dog-food-bag-duration"><img src="https://petportioncalc.com/bag-duration-chart.png" alt="How long a 30 lb bag of dog food lasts by body weight" style="max-width:100%;height:auto"></a><p style="font-size:12px">Chart: <a href="https://petportioncalc.com">PetPortionCalc.com</a> (CC BY 4.0) — <a href="https://petportioncalc.com/free-resources">free-resources</a></p>
Download this image (PNG/JPG) — or use the embed snippet above.
If you download instead, copy this credit: Illustration: PetPortionCalc.com (CC BY 4.0) with a link to this site.
4. Dog waist check — from above
Two dogs seen from directly above: on the left, a dog at a healthy weight with a visible waist narrowing behind the ribs; on the right, an overweight dog whose body runs straight from ribs to hips. Pairs well with any article about canine weight management or body condition scoring.
Pairs well with articles about canine obesity, weight management and body condition scoring. See also our body condition score guide.
Embed code (copy & paste into your article):
<a href="https://petportioncalc.com/body-condition-score"><img src="https://petportioncalc.com/dog-waist-check.png" alt="Two dogs seen from above: healthy dog with visible waist, overweight dog with no waist" style="max-width:100%;height:auto"></a><p style="font-size:12px">Illustration: <a href="https://petportioncalc.com">PetPortionCalc.com</a> (CC BY 4.0) — <a href="https://petportioncalc.com/free-resources">free-resources</a></p>
Download this image (PNG) — or use the embed snippet above.
If you download instead, copy this credit: Illustration: PetPortionCalc.com (CC BY 4.0) with a link to this site.
Attribution, in short
Under CC BY 4.0 the credit should include the creator, the licence name and a link. The embed snippets above already contain the full credit — if you use them, you are done.
If you download the image instead, either format below works (the full one is safest):
- Full credit: “Illustration: PetPortionCalc.com (CC BY 4.0) — https://petportioncalc.com/free-resources” (linked)
- Short credit (when space is tight): “Illustration: PetPortionCalc.com” (linked)
Acceptable placements: a caption under the image, the alt text of the image, a resources section, or a footnote at the end of the article.
Want a different colour, size or an editable version? Email contact@petportioncalc.com — happy to help where we can.
While you are here
Every illustration above comes from the feeding calculators on this site: enter a weight and a food's calories, and get the daily amount in grams — for dogs and for cats. Free, no sign-up.
Calculate your pet's daily food amount →
Cat body condition score →
How long a bag of dog food lasts →