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and then vessels run from the fetus back over the mother's vessels. This allows for a better flow of oxygen between the mother and the fetus.

Parental care

The young are able to eat solid food at 3 days old, but continue to nurse for up to 7 weeks. The milk produced for these young is very dense in energy. This may be due to the lack of water availability in their environment.

Both male and female rock cavies care for their young. When both parents are present, the females spend more time with their young than the males

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