Vet's just called; Rem's red blood cells are at 28%. Still below normal, but considerng that he was at 15 last night-- Over Xmas, he dropped to 17 and climbed only to 24 after the transfusion. Since I'm looking for reasons to be hopeful anywhere, this looks like as good a reason as any.
He wasn't thrilled about being offered kibble for dinner. Started to munch a few pieces after glaring at the other dogs for a while, so I picked it up and gave him canned yuck instead. He was pretty thrilled about that--scarfed it down, but stopped halfway through and said that's enough. He might have just had enough junk food & lunch scraps to satisfy him, or he's just not feeling up to snuff still.