So Sterling was plumping up as usual for winter as her seasonal shed finished. She gets plumper but not heavier (as per the scale) generally, or at most she puts on 1/4 of a pound for the season and will drop around that much come spring/next shed/coat color change (she gets very white/sliver for winter, I I really did name her well without really knowing it).
Anyway... she was plumping, and drinking at her normal pace. Then I noticed that her water was emptying out within the day, first day I thought ok maybe I did something wrong when I screwed the cap on and caused it ti drip, but did take note that there wasnt much accumulation under the bottle nor in her "litterbox corner" where she pees. There's also no strong odor indicating any type of UTI. pH strips are all reading normal.
(There she goes drinking again as I'm typing this)
So day two the water drains just as fast. This has been going on for nearly a week now. And today while petting her i felt her ribs in a way that I haven't in a very very long time. Probably not since she was a malnourished infant. I took her weight. Still 1.5 pounds. I tried a different scale just in case, still 1.5lbs.
So wtf is going on here? Do I need to go to the vet?