When do cats reach full size?
Most cats reach their full size at 18 months old. Larger breeds, like Maine Coons, can take 2 to 4 years to reach their full size
Cats make their most rapid growth in their first nine to twelve months of life. By a year old most cats are near or at full size. A modest amount of growth can occur until 18 months. Large breed cats such as ragdolls or Maine Coon cats can grow 2 to four years to reach full size.
Most cats reach their full size by 18 months of age, but some larger breeds, such as the Maine coon, may take longer to finish growing.
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