My elderly cat Happiness is not doing well. She vomited a few times over the past few days, which isn't all that unusual, but she seemed to be eating even less than usual, and the last time she threw up, it was just thin, watery yellow liquid. So I was worried about her, wondering whether I should take her to the vet. And then when I got home from work this morning, she just didn't seem right. Lethargic and weak, and just not behaving like herself. She purred when I petted her, and even that sounded wrong, somehow. So I took her in to the vet.
Apparently, her kidneys were failing. Not good. They have her on fluids now, and are going to keep her through the weekend. I went in to see her this afternoon, and she did look a little better. They also said she had eaten some, which is encouraging. Mostly, though, she seemed very quiet, like she just didn't want to do anything but rest. They've got her on a nice, cozy cat bed with a hot water bottle, so at least she's resting comfortably.
The prognosis is, well, uncertain. The vet says she has sometimes seen cats bounce back from this sort of thing after being treated with fluids, and be pretty much okay for years. But Happiness is old and frail, and already has a thyroid condition, so... Well, we'll see what happens. Poor kitty.