Perhaps take one of them, the most sick, or the one least inclined to put up a fight [to the vet], just to see what it might be?
Yes, Calvin, I’ve thought of doing that, and I may yet. The problem is that the ones that won’t let me take them are the same ones who firmly refuse to let me give them any kind of medicine. It takes me and my husband both just to give them flea medicine at the base of the backs of their necks.