They're fully grown at around 8 months of age, or up to one year of age, but they are only considered to really be an adult dog when they are two years of age.
they are fully grown when they are 6 years old
There is now way to find out how old it is but you can find out when it is fully grown when the black lines on it's head have gone.
Fully grown physically at one year old; fully grown emotionally at between twe to three years old.
When you are fully grown at least 20 years old =)
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6 years old
Adult. Most guppies are fully grown at a year old.
Your eye is fully grown when you are 13 years old.
They CAN conceive from 3 months old but I wouldn't recommend this, especially for the doe (female) as she hasn't fully grown and it can be dangerous for both her and the kits. It is best waited till 6 months of age before breeding them :)
To breed, two and a half, to be fully grown, three.
A gerbil is full grown by 6 months old and measures 7-8 inches including the tail.
when a horse is full grown it is 5- 6 years old