How old are Guinea Pigs when you start feeling babies moving around?

Guinea pigs typically start feeling their babies moving around in the later stages of pregnancy, around 4 to 5 weeks gestation. This is when the embryos develop sufficiently and begin to show noticeable movement. The full gestation period for guinea pigs is about 68 to 72 days, and by this time, the mother will be noticeably pregnant and may exhibit behaviors indicating her awareness of the developing pups.