We have a Siamese cat who finds a space to nest in. She once was pregnant and had 3 kittens. There was no runt, no placenta, no liquid. Just three tiny, fluffy kittens in with my underwear. We kept the little one and named her Peanut. The mother cat, continues to nest Though she's been spayed Like she expects to have kittens any time now. Even now, 13 years later. Animals can be very strange. You have to love their weirdness. It's part of who they are.