How old?

[jnenbnb]

Hi everyone, probably a silly question but i cant seem 2 find the answer out, at what age are guinea pigs fully grown?
Emma x

 

[CobwebandPigpig]

Not a silly question!

I think it's one year old, I read someplace ? - maybe someone who knows will put us right!

 

[Jayms_fallen_angel]

I think it's a year too. Acorah seemed fully grown at a year.

 

[maryh]

Maturity commences at around 9 months,but they can continue to grow in length untill 15 months.