Cats are experts at hiding when something is wrong. The litter box is where the early clues show up first — if you know what to watch for.
Watch the frequency
- More urine or more trips than usual can point to kidney disease, diabetes, or thyroid problems.
- Straining, many tiny amounts, or crying in the box may signal urinary tract disease; blood is sometimes visible.
- Less urine, or nothing at all, can mean a blockage — an emergency, especially in male cats.
Watch the behavior
- Going right next to the box, not in it, can mean the cat now links the box with pain.
- A senior cat missing the box may be struggling with sore joints — a box with low sides helps.
When it is urgent
A cat that strains again and again without producing urine needs a vet the same day. A urinary blockage can become life-threatening within hours.
Logging each cleaning and any change gives your vet a real timeline — not a vague memory of a few days ago.
