guinie pig

Question
how soon can you tell if you  have a male Guinea pig i have two babies at 3 weeks at what age?

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