Yes, the females will know when they are pregnant. Other females will know too if they are housed together. The males will know because the pregnant female will have nothing to do with the males if she is pregnant.
Most Guinea Pigs becomes lazy when they are pregnant,so most Guinea Pigs will not run away from home.But,Pregnant Guinea Pigs must need more exercise.
I had guinea pigs when I was little. two females, one was pregnant but we didn't know when we got her. she and the other one killed the babies when they were born.
No
Guinea pigs pregnancies last for 10weeks
Yes.
It's true some guinea pigs can't get pregnant. Only if you don't keep her in a cage without any boys!
not usually
guinea pig
Yes actually
As far as I know, guinea pigs do not revolve anything.
the will pant and breath heavily. this is a sign that happens when it starts. they will also get bigger then they normally are.
Guinea pigs, most likely have their babies during the night. I know that when I had my pregnant guinea pig, I kept her in my room until she had babies. She woke me in the middle of the night with her sounds while giving birth.