Sexing Help me confirm the sex of my guinea pig?

Looks like a boy to be sure gently push on either side of the bump above anus and his penis should come out you should also be able to feel his testicles..

Not sure...try and see if you can feel/see the penis bone. Usually, it's not hard to spot. Just gently press above the genitals. It's soft and squishy when it's a female. You can feel a bump/tube thing if it's a male. As a matter of fact, I think I can see the penis bone in the 2nd pic. I hope you separated the baby from its mom/female cagemates...if not please do so! Male guinea pigs can become fertile as early as 3 weeks of age.

CavyTV said:

Not sure...try and see if you can feel/see the penis bone. Usually, it's not hard to spot. Just gently press above the genitals. It's soft and squishy when it's a female. You can feel a bump/tube thing if it's a male. As a matter of fact, I think I can see the penis bone in the 2nd pic. I hope you separated the baby from its mom/female cagemates...if not please do so! Male guinea pigs can become fertile as early as 3 weeks of age.

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I do feel a hard bone above the genitals. When I try to reveal the penis though, it doesn't seem like a ton "comes out", it only extends out a little. Thoughts?

That's fine if even a little extends it's a male females won't have anything extend out

stayarctic said:

I do feel a hard bone above the genitals. When I try to reveal the penis though, it doesn't seem like a ton "comes out", it only extends out a little. Thoughts?

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Sometimes it takes a few seconds to fully come out. It could also be that you are not putting enough pressure / not pressing on the right spot.

It looks like female to me. See this link. The pig number 15.
https://cavyspirit.com/sexing.htm

lissie said:

It looks like female to me. See this link. The pig number 15.
https://cavyspirit.com/sexing.htm

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Hmm, I don't see a pig (broken link removed) , it seems to end at (broken link removed) . Damnit though, that really freaks me out. I hope he's not female. I'll keep getting better photos and see if I can actually get the penis to fully come out to confirm...

Can you take some photos where you've gently parted the genital region? (Like how they mention on the link lissie provided.)

Sorry. Pig 7, picture number 15.
https://imageevent.com/cavyspirit/sexing?p=14&n=1&m=6&c=2&l=0&w=1&s=0&z=2

I think it's female.

@Shieme @lissie @stray hares How can I get a professional confirmation on this? Should I take him (her?) into the vet?

Is there a guinea pig rescue in your area? They will probably be able to help you check.

If you take him/her to the vet, make sure they have experience with guinea pigs. Dogs/cats vets don't usually have experience with guinea pigs.

Looks male to me!

stayarctic said:

Hmm, I don't see a pig (broken link removed) , it seems to end at (broken link removed) . Damnit though, that really freaks me out. I hope he's not female. I'll keep getting better photos and see if I can actually get the penis to fully come out to confirm...

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That's all you can do is try to get the penis out or wait till the balls drop but that takes months. Some are easier than others but if you are pressing the right spot and nothing, you got a girl. Do you have a recuse place? Maybe go to a pet store and ask a person there but ask questions you already know. See if you can find a knowledgeable person. Not all pet store clerks are unknowledgeable. Some actually work there because they love animals then they learn, crap.

I'll be taking him to someone to help confirm his sex next week... Just today I noticed he humped my other guinea pig! The other one is definitely male; he's 1 year old and has been consistently identified as male by both his previous owners and the local Humane Society. Do females hump other pigs or is this strictly a male behavior? Here's hoping I have a little twink guinea pig instead of a pregnant one!

stayarctic said:

I'll be taking him to someone to help confirm his sex next week... Just today I noticed he humped my other guinea pig! The other one is definitely male; he's 1 year old and has been consistently identified as male by both his previous owners and the local Humane Society. Do females hump other pigs or is this strictly a male behavior? Here's hoping I have a little twink guinea pig instead of a pregnant one!

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yes, they do. They will also rumblestrut.

Since you are not sure about the gender, please keep them separated for now.

If it helps, I'm actually pretty nearly 100% he's a (currently underdeveloped) boy, because I can actually see the penile ridge in the second photo (unless it's a trick of the light). But please let us know what sex he/she turns out to be, because there's quite a mixture of opinions!