Not a virus but a ciliate parasite.

https://scripps.ucsd.edu/news/parasite-dissolves-crabs-discovered

Biology is cool, especially on the microscopic scale. And when it's all said and done, it boils down to the microscopic (or smaller) scale.

Beware............monsters live here.

The desert is a true treasure for him who seeks refuge from men and the evil of men.
In it is contentment
In it is death and all you seek
(Quoted from "The Bleeding of the Stone" Ibrahim Al-Koni)

member of the cabal of dysfunctional squirrels?