Siberian Kitten Weight Chart: Growth by Week
Track your Siberian kitten's growth against global breed standards.
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Want to track growth over time and receive medical alerts when weight drops?
| Age | Male avg | Female avg |
|---|---|---|
| Birth | 110 g | 110 g |
| 1 Week | – | – |
| 4 Weeks | 525 g | 525 g |
| 8 Weeks | 1200 g | 1200 g |
| 12 Weeks | 1600 g | 1600 g |
How fast should a Siberian kitten grow?
Siberian cats grow slowly and often do not reach full size until 5 years of age. They are robust and muscular with a natural cold-climate coat. Weight gains are especially consistent in the first months.
When do Siberian cats stop growing?
Siberian cats typically grow for 60 months before reaching their full adult weight.
Red flags: When to worry
- Sudden drop in activity (Siberians are normally very active)
- Birth weight below 90 g
- Stagnation between weeks 4–8 despite normal appetite
- One-sided growth — kitten noticeably lagging behind litter mates