How long does it take for a Guinea Pigs testis to show up where you can really tell?

Question

I have a guinea pig that has been mounting my female that has had babies a few weeks ago, I originally thought it was a she, but with this going on I'm not sure. I looked under it to see if it had male or female parts and I really can't tell. I was told it is about a year old but I'm not too sure. I mean it looks like a boy and a girl at the same time. I need help I don't need any more babies.

Answer 1

I hope you removed him from the cage already or you will have more pregnant sows. Babies can breed at 3-4 weeks.

You can get him neutered and keep him. Or keep him with any baby males.

Gestation is 59-73 days by the way.

Answer 2

put ur fingers on each side of its thing n push down a little if a long thing comes out its a guy if nothing comes out its a girl

just look at the pictures at the bottom of this site

Answer 3

some stuff i found

Males (boars): Press gently just above the genital area. If it's a male, you should be able to make the p***s slowly extrude. Don't be fooled by appearances. Sometimes, it doesn't look like there is a p***s there at all! Especially in heavy, older males, the p***s can be "tucked away" in folds of skin, looking entirely like a female! You should TRY to get the p***s to ease out.  

http://www.guinealynx.info/sexing.html

go there to see some pics & how to find the s*x of your guinea pig.