Different angle maybe will help.

{{gwi:468960}}

I've looked through my caterpillar book, and I can't find one that looks like yours. The body is shaped like the Schizuras - red-humped cats are in that group - so it could be that, since your cats are so little, they're a type of cat that looks very different in the early instars than later ones. There are only a few pictures in my book of early instar cats.
I'll guess that they're early instar red-humped cats - if you can keep track of them or raise them yourself, you might get a better ID with a later instar.
Sherry

They are strange!, how exciting