Last night we noticed that Mrs Wobbly had flystrike. She's had problems with her rear end for years, mainly because she's so old she can't bend enough to clean herself, so is subject to daily inspections and bathing every other day.
We rushed her into the vet who immediately took her into surgery, knocked her out, and removed all traces of the parasites. Thankfully it looks like we've caught it early, but the next couple of days are critical to her survival, mainly due to potential secondary infection.