When do American Shorthair cats stop growing?

Most American Shorthairs reach their adult body weight by around 12 months. Males may continue adding muscle into the second year, but the majority of growth is complete by the first birthday.

How much should an American Shorthair kitten weigh at 4 months?

A healthy American Shorthair kitten at 4 months typically weighs approximately 1.5–2.5 kg, though individual variation is significant. Consistent week-to-week gain and bright, active behavior are better growth indicators than hitting a specific weight target.

When should I switch my American Shorthair kitten to adult food?

Begin transitioning to adult food at around 10–12 months. Switch gradually over 7–10 days and recalculate daily portions based on adult calorie needs, which are lower than kitten needs, to prevent weight gain in the young adult period.

American Shorthair Growth Chart: What to Expect | PetCalculator

American Shorthairs reach their adult size by around 12 months, like most domestic cat breeds. This guide covers typical weight milestones from kittenhood through adulthood and how to assess whether your cat is growing on track.