British Shorthair Kitten Weight Chart: Growth by Week
Track your British Shorthair kitten's growth against global breed standards.
Save the growth curve
Want to track growth over time and receive medical alerts when weight drops?
| Age | Male avg | Female avg |
|---|---|---|
| Birth | 95 g | 95 g |
| 1 Week | – | – |
| 4 Weeks | 475 g | 475 g |
| 8 Weeks | 1075 g | 1075 g |
| 12 Weeks | 1600 g | 1600 g |
How fast should a British Shorthair kitten grow?
British Shorthairs develop compactly and robustly. The breed grows slowly, often up to 5 years. Females remain notably lighter than males — this is breed-typical and not a development issue.
When do British Shorthair cats stop growing?
British Shorthair cats typically grow for 48 months before reaching their full adult weight.
Red flags: When to worry
- Weight consistently below the curve
- Dull coat and low activity at 4 weeks
- Birth weight not doubled by week 2
- Noticeably smaller or larger kitten compared to siblings