Yeah, I've seen a fair number of deaths, and an even larger number of neurological defects that were caused by Flagyl overdosing. I never give Flagyl unless there are confirmed protozoa in the fecal samples. I have very accurate triple balance beam scales and weigh my animals before every dose of meds, too, to make sure dosing is not just a guesstimate.
But my vet friends come for dinner almost every Monday night and we give all the animals a once-over, including monthly fecals. They even bring a portable xray or ultrasound if needed. I realize not everybody has that luxury.
The Zombie Mama is here!