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When do Goldens "grow up"?
Physically, Goldens are completely mature by 2 years of age. Mentally, well, that depends on the individual, but usually not before 3 years of age. Even though Goldens are physically mature by 2, you may notice changes in them well past that time. Remember, by nature Goldens are fun-loving and happy-go-lucky, so their perceived maturity may be less because of it.
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