Weight
Norwegian Forest weight chart
A water-resistant, tufted-ear giant from Viking lore, built for cold with a semi-long coat.
Independent, friendly, climber.
Adult reference weight is 10 to 20 lb. The breed record lists 12 to 16 years.
Breed record origin is Norway.
The breed record marks Norwegian Forest as a fit for a first-time owner.

How much does a Norwegian Forest weigh?
| Age | Female | Male |
|---|---|---|
| 8 weeks | 2.2 lb1.7 to 2.8 | 2.4 lb1.9 to 3 |
| 12 weeks | 3.1 lb2.5 to 3.8 | 3.5 lb2.9 to 4.2 |
| 24 weeks | 6.4 lb5.1 to 7.9 | 7.5 lb6 to 9.3 |
| 1 year | 8.8 lb7.1 to 11 | 11.5 lb8.8 to 14.3 |
| 18 months | 9.9 lb7.9 to 12.1 | 13.2 lb10.6 to 16.5 |
| 3 years | 11 lb8.8 to 13.2 | 15 lb11.9 to 18.1 |
| 4 years | 11.9 lb9.5 to 14.3 | 16.1 lb13 to 19.8 |
Breed weight ranges are a reference, not a diagnosis. Ask a vet before you treat a number as a problem.
Slow-maturing large breed. WALTHAM curve is reference only for kittens under 6 months.
The curve comes from CFA Norwegian Forest Cat breed standard + APOP ideal weight ranges.
Food
High protein for a large, active cat.
Home
Tall trees and shelves. They climb. Indoor with safe outdoor time if you can offer it.
Company
Dog-like with family. Not a silent ornament.
Coat
Daily brush in shed season. Water-resistant coat still mats if ignored.
What tends to stress them
- Heat
- Skipped grooming
- No climbing space
Breed risks to mention to a vet
- Hypertrophic cardiomyopathy
- Glycogen storage disease
A breed risk is not a diagnosis for your cat.
More breed charts
Plants, food, and household hazards
Check your entire room for hidden cat hazards in 10 seconds
Pick a room. These items are in the Borzi reference, and they hide in ordinary houses.
Open in Borzi