Synthetic

You pretty sum up my worst fears of it...Was your neighbor's cat a miniature, like really small? That's what I have. All miniatures. The biggest ones are about half the size of a natural cat. 

It's strange though cause it was only this one cat. i have a white one who is a miniature too and she had kittens and tended to them like any other cat (but sadly they didn't live). You mention another cat adopting the kittens as their own, and that is exactly what my white one did several months ago with a kitten that managed to survive to another cat (the mother died sadly) . 

This specific cat though, it's so strange and it's been giving me headaches for months. First off, it went into heat back around March when it was still somewhat cold. It had kittens, and I'll never forget it just having them and leaving them there...she didn't clean them or nothing. It was like she had them, and moved on...I have had to force that cat to tend to them. This last litter that got killed off, I was forcing her into a box to make her feed them. 

In response to your question,my neighbor's cat wasn't real small or miniature. She was over a year old, so didn't have kittens too young. I have no idea why she abandoned them; sometimes it just happens in nature,. 

How is the cat's health now? You had mentioned that her body was broken after having kittens. That's quite  a large litter for such a small cat. 

Hmmm, that might be a combination of issues come to think of it. This cat is less than a year old too. I didn't think a cat could go into heat at 7 months old, but it happened. 

Her body suffered damage internally. She had 5 kittens and is real little, so it tore her insides up. She had difficulties with using the bathroom, which is hard to talk about without getting graphic and I don't want to gross anyone out. She lost most of her weight too, it's barely anything left to her weight-wise. 

5 kittens though out of a small cat, oh yeah, it's hard to believe cause that's such a large litter. 

All my cats are miniatures. Some of them are bob-tailed. The tail will be like a nub. I had some a few years ago with absolutely no tail at all.