When a Drecko is wounded, it has the "Severed Wounds" status, but when you hover over that status effect, the tooltip says:
"This Duplicant sustained serious injuries that are impacting their work and well-being. Effects: - Athletics: -9".
It probably is the same way for every other critter type. I didn't test it for any other critter type than a Drecko, though.
Thank you for creating a beautiful game! With regards,
I let a critter be exposed to radiation by hitting them with a radbolt reflector that reflected 50 radbolts. It lost 20 health, thus reducing its health from 25 to 5. It got the "Severed Wounds" status effect with a wrong tooltip.