Yes. These include retention of fetal membranes (afterbirth/placenta), metritis, mastitis, and eclampsia (milk fever). Retention of Fetal Membranes. Occasionally a cat may fail to pass the final set of fetal membranes after birthing is complete, and they will decompose within her uterus.

Do cats pass afterbirth?

The first kitten is normally born within 30 minutes of straining starting, and following kittens should come every 10-60 minutes. Kittens are normally born inside a thin sac, which your cat should tear off, enabling them to breath. For each kitten born, your cat will also pass an afterbirth (placenta).

How long does it take for the placenta to come out of a cat?

If a placenta does not come out with each of the kittens, make sure it expels within 24 hours after birth. Each kitten should have one placenta. It is a good idea to count the placentas. If the placenta remains in the cat, you will need to see a veterinarian.