...
So when I mean 'a slime dies'.  I mean they're not getting eating or disintegrated or flinged into the Slime sea(they don't die in the Sline Sea it's okay).  I mean it when another slimes abilities kill it(Pegacorn Slime, Bubble Slime, etc), it gets a Deadly Slimesickness, or...a rancher kills it.
It turns into a plie of goop, with it's attributes.
Here's...a dead tabby Slime

Yup.  Also Tarrs and slimes that eat slimes and slimes that eat that certain slime will eat the dead body.  Yes you can suck them up in your Vac Pack.