how old are they when they can reproduce?

Question
so do u think it was bad that i had him with his mother for 5 weeks?
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-----Question-----
how old are boys when they are able to reproduce
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Hello Grace,

Boars can impregnate a sow at around 3-4 weeks old. Males should be separated from females (including their mother and sisters) at the age of 3 weeks.

-kkat
http://www.geocities.com/abyssinianguineapigs

Answer
Hello Grace,

It is possible his mother is pregnant again. Keep a close eye on her. There is still a good chance she isn't though as most males aren't quite sure what to do with themselves yet at that age, but it is still a possiblity.

-kkat
http://www.geocities.com/abyssinianguineapigs