I know this is just another detail sketch, but December is Bethereal "birth"day.

I suck with storylines...buut anyways scientists for government intelligence needed an ultrapure dog without worms, or something that obviously said these people were sick (mal a la tete) so they raised a synthetic dog using synthesized mucous membranes.

Then they pulled off many expiriments. They were sick. She probably died a couple of times, but the scientists had to quickly move on so they threw away a lot of observational data that they didn't need (and that included a few life-sustaining nanocell medicines that didn't work well enough, they were simply noted "failures").

Over time, she became a blob with no identity. Due to lack of resources, they simply attached some meat scraps from other specimens (also raised utrapure). Her life expectancy and vital factors were becoming chaotic. Outcomes of simple expiriments would be harder to predict. She would have to be incinerated.

Then, to make a crappy story short, she played dead for some time and eventually got out of the lab.