When Do Cats Stop Growing?


Quick Answer

Cats typically finish growing at around 1 year old. Bone growth occurs until a cat is around 8 months old, and then the cat finishes its development with four months of sexual maturation. Exact growth speed depends on the cat's breed, as some breeds take more or less time to reach adulthood.

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Full Answer

Cats may gain weight after they reach adulthood, but the bones are set. Nutritional deficiencies can slow down cat growth, as they require magnesium, sodium, potassium, iron and zinc. Excessive calcium can slow bone growth.

Kittens go through multiple growth stages. The first stage is the baby kitten phase, which begins at birth and continues until the kitten is about 1 month old. During this stage, the mother cares for her kittens. The next stage occurs between 1 to 2 months of age. Kittens begin to explore and can use the litter box in this stage. In most areas, 8 weeks old is the minimum age for a kitten to be adopted or sold. Between 2 to 6 months old, kittens grow rapidly and test the limits of their environment. Kittens reach puberty at about 6 months old. Cats should be spayed or neutered before they reach puberty, unless they are intended for breeding.

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