Siberian Weight Chart by Age
Track your Siberian 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 | 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
Siberian weight: frequently asked questions
- How much should a newborn Siberian kitten weigh?
- A healthy newborn Siberian kitten typically weighs between 80 g and 140 g. Weigh every kitten on the same scale at the same time each day for the first two weeks — steady daily gain matters more than the absolute number.
- How much should an 8-week-old Siberian weigh?
- At 8 weeks most Siberian kittens weigh roughly 900–1500 g. The interactive chart above plots the full healthy band so you can see exactly where one kitten falls.
- How much should a 12-week-old Siberian weigh?
- By 12 weeks a Siberian kitten is usually around 1200–2000 g, with males trending toward the upper end of the range and females toward the lower end.
- When does a Siberian stop growing?
- A Siberian reaches its full adult size at about 5 years (roughly 60 months). Most visible weight gain happens in the first 12 weeks, then growth continues more slowly toward the adult frame.
- How do I track my Siberian kitten's growth?
- Enter a current weight in the tool above to plot it against the breed curve. To follow every weigh-in over time, felineStudio is cattery software that charts each kitten's growth, flags slow gainers automatically and keeps the full health record per cat.