(But, no, the dog park is all regular lawn grass.) The knee was still slightly swollen, like a pocket of fluid above
the cap. Not too painful, really, and I could walk on it just fine. The bruise was slowly fading, but the itching was awful. Then two days ago, I was camping, and knelt down on the knee by mistake, and sorry to be gross, but it felt like the fluid pocket popped... my knee burned on the inside for a few minutes (while the fluid drained?) and then felt fine.