Weight
American Shorthair weight chart
America's native cat, bred from working mousers into a pedigreed breed. Stocky, muscular build with a round face and dense coat. Known for their robust health, longevity, and gentle temperament. Over 80 color varieties, with silver tabby most iconic.
Easygoing, affectionate, playful, adaptable, healthy.
Adult reference weight is 8 to 15 lb. The breed record lists 15 to 20 years.
Breed record origin is United States.
The breed record marks American Shorthair as a fit for a first-time owner.
How much does a American Shorthair weigh?
| Age | Female | Male |
|---|---|---|
| 8 weeks | 2 lb1.6 to 2.5 | 2 lb1.6 to 2.5 |
| 12 weeks | 3.1 lb2.6 to 3.5 | 3.4 lb2.8 to 3.9 |
| 16 weeks | 4.1 lb3.5 to 4.6 | 4.6 lb4.1 to 5.4 |
| 20 weeks | 4.9 lb4.4 to 5.5 | 5.9 lb5.2 to 6.7 |
| 24 weeks | 5.5 lb5.1 to 6.2 | 6.9 lb6.2 to 7.8 |
| 30 weeks | 6.1 lb5.5 to 6.6 | 8.3 lb7.3 to 8.9 |
| 36 weeks | 6.6 lb6 to 7.4 | 8.8 lb7.9 to 9.9 |
| 42 weeks | 6.5 lb5.8 to 7.1 | 9.4 lb8.4 to 10.2 |
| 1 year | 6.7 lb5.9 to 7.7 | 9.5 lb8.3 to 10.8 |
| 15 months | 7.1 lb6.4 to 7.8 | 10.1 lb9.2 to 11 |
| 18 months | 7.3 lb6.4 to 8.6 | 9.9 lb8.8 to 11.4 |
Breed weight ranges are a reference, not a diagnosis. Ask a vet before you treat a number as a problem.
WALTHAM growth curve validated for adult weight 2-7kg (Salt et al. 2022). Pair with BCS checks.
The curve comes from WALTHAM / Salt et al. PLOS ONE 2022 (Liverpool DataCat 1456). WALTHAM dataset
Food
Balanced diet; portion control to prevent obesity. Moderate protein.
Home
Adaptable to indoor/outdoor; thrives indoors with enrichment.
Company
Friendly with family and other pets; independent but affectionate.
Coat
Weekly brushing; minimal shedding. Seasonal coat changes require extra brushing.
What tends to stress them
- Overfeeding
- Lack of play
- Sudden changes
Breed risks to mention to a vet
- Hypertrophic cardiomyopathy
- Hip dysplasia (rare in cats)
- Obesity
A breed risk is not a diagnosis for your cat.
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