Okay--while the vet was here the other day, she mentioned looking at the lower eyelids, much the way you'd look at a dog's gums. I said, "Like that FAMANCHA chart?" She said, "Weeellll... it's really a little more complex than just pulling the chart off the internet and comparing color. It can be misleading. You really need to go through the training to know what you're looking for...." She was telling me that if they're ever not a good healthy pink then I definitely need to fecal. SO... how would one go about going through this training? Are there prerequisites? Or is it better to just fecal and be done with it?