Just looking at the two old cats (14 and 10) and it’s apparent that they, like most things, don’t age well.
Or to be more specific, they don’t age cheaply.
I have two cats. Cat One has been with me ever since I graduated college and moved into my own apartment (with a roommate). I think of her as the one companion I’ve had since becoming an actual adult person 🙂
She was healthy for most of her life, with her only trips to the vet consisting of the requisite exams and check-ups.
The last couple of years, though, I got some blood test done which is standard given her age, and it revealed that her kidneys are starting to lose function. This is pretty common in cats, as kidney disease and failure is pretty much the top ailment in felines.