You cannot.
It's difficult to detrmine the age of a guinea pig once it's full grown. a vague age can be determined but nothing specific.
You can tell if a guinea pig is a boy or girl at the age of 4weeks
Right after birth.
You cant tell their age like a tree. You have to know when they were born. That is all you can do.hope it helped. Sorry there is nothing you can do.
I don't think there is a test to tell if a guinea pig is pregnant, but a pregnant guinea pig will not let you rub its stomach. If you are still unsure, take your guinea pig to a vet.
Unfortunately, there is no way to tell if a guinea pig has ever had babies before.
Take you guinea-pig to the vet - if they are experienced they should be able to tell if your guinea-pig is preggers or not.
Boy guinea pigs don't have nipples.
the guinea stork comes
You will being to itch.
at about 1
Male guinea pigs can succesfully imprenate a female guinea pig at (I believe)only 8 weeks of age, however it takes about 9 months for the guinea pig to be fully grown.
you van tell by the toe nails if they are thich and long an adult if they are thin and short a baby you can tell if the toenails are short and thin it is a baby