Well, If they are growing length wise they are 0-8 months old. If they are growing in width(fatter) They are a year or older. If you are wanting to breed, don't breed it its older than a year...Well the males can be, but not the Females.(:
You can tell if a guinea pig is a boy or girl at the age of 4weeks
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.
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.
at about 1
it is hard to age a guinea pig but if its over 1kg then its over 1 year old
Female guinea pigs sexually mature very early. They can actually begin to reproduce at 3 to 4 weeks of age. Pregnancy is especially hard on a guinea pig, but even more so at this age. It is usually recommended that you do not allow your guinea pig to breed, but if you are going to, wait until they are at least 7 months of age to allow them in with a male.
The earliest a guinea pig can mate is at the age of 6-8 weeks.
No they dont have to be the same age but if u plan on breeding a guinea pig older than 1 and never have been bred before the age of 1 then ur guinea pig may incounter health issues.
Trial and error...assuming that a guinea pig will eat more of the food it prefers than other foods.
a guinea pig they are more fun to play with for this age and live longer
All guinea pigs can bite, at any age. If you socalize your guinea pig and treat him well, chances are he will choose not to bite.
It is spelled "guinea pig". You got it right! :)