So, the warmed saline is the first addition to my bloodstream that my body didn't produce on its own. Weird.
I'm feeling better, and still full after that comfort-food lunch.
In the meantime, check out Diamond, a kitty who donates blood for cats who need transfusions. And, if you're of a mind to, donate to City Kitties or the Tompkins County SPCA, or the awesome animal welfare charity of your choice.