Weight Based Size Guide
Find your cat’s Catventure size
Whilst weight based measurements can be fairly accurate, measuring with a soft tape measure according to our standard size guide is always most accurate. We recommend using our checkout plus feature in the cart for free returns when using the weight based size guide.
Quick reference (by breed)
| Breed | Typical adult weight (Male / Female) | Common harness size (Male / Female) | Kitten → adult path | Coat / fit notes |
|---|---|---|---|---|
| Maine Coon | 8–10+ / 6–7 kg | XL–XXL / L–XL | XS → S → M → L/XL (growth to 4–5 yrs) | Very dense coat; if near a boundary, may step up one size for neck comfort. |
| Norwegian Forest Cat | 6.5–9 / 4.5–7 kg | L–XL / M–L | XS → S → M/L | Long waterproof topcoat; apply coat buffer near cut-offs. |
| Siberian | 6–9 / 4–6.5 kg | L–XL / M–L | XS → S → M/L | Thick triple coat; may need one size up at the neck. |
| Ragdoll | 6–8 / 4–6 kg | M–L / M | S → M (~5–6 mths) | Silky longhair; ensure straps contact body, not just fluff. |
| British Shorthair | 6–8 / 4–6 kg | M–L / S–M | XS → S (~5 mths) → M | Very plush coat, cobby neck; can tip up a size near boundary. |
| Scottish Fold | 4–6 / 3–4.5 kg | S–M / S | XS → S | Stocky frame; check neck overlap ≥50%. |
| Russian Blue | 4.5–6 / 3.5–5 kg | M / S–M | XS → S | Dense double coat but slim torso; usually true to weight cut-offs. |
| Bengal | 5–7 / 4–5 kg | L (6–8 kg) / M | XS → S → M/L | Sleek coat; snug is safer if in-between. |
| Abyssinian | 3.5–5 / 3–4 kg | S–M / S | XS → S | Fine coat; usually smaller size fits best. |
| Australian Mist | 4–6 / 3–4.5 kg | M / S | XS → S | Average coat, follows weight guide closely. |
| Tonkinese | 4–6 / 3–4.5 kg | M / S | XS → S | Sleek build; bias to smaller if between. |
| Siamese | 4–5 / 3–4 kg | S–M / S | XS → S | Very slim; neck often prefers smaller size. |
| Oriental | 4–6 / 3–4.5 kg | M / S | XS → S | Tubular build; go smaller if in-between. |
| Oriental Longhair | 4–6 / 3–4.5 kg | M / S | XS → S | Light long coat; tiny buffer near cut-offs. |
| Domestic Shorthair | 4.5–6 / 3.5–5 kg | M–L / S–M | XS → S → M | Most end up S or M; heavier males L. |
| Domestic Longhair / Persian | 5–6 / 3.5–5 kg | M–L / S–M | XS → S → M | Long fluffy coat; may step up one size near boundary. |
| Ragamuffin | 6–9 / 4.5–7 kg | L–XL / M–L | S → M | Plush coat; check neck comfort. |
| Burmese | 5–6 / 3–4 kg | M / S | XS → S | Compact/muscular; may size up earlier at chest. |
| Devon Rex | 3–4.5 / 2.5–4 kg | XS–S / XS–S | XXS/XS → S | Fine/curly coat; usually smaller size. |
| Cornish Rex | 3–4.5 / 2.5–4 kg | XS–S / XS–S | XXS/XS → S | Very fine coat; bias smaller. |
| Turkish Angora | 4–6 / 3–4.5 kg | M / S | XS → S | Silky long hair; small buffer near boundary. |
| Somali | 4–5.5 / 3–4.5 kg | M / S | XS → S | Medium-long coat; may tip up near cut-off. |
| Sphynx | 4–5 / 3.5–4.5 kg | S–M / S | XS → S | No fur; ensure snug neck (smaller if between). |
