Quick answer: A cat straining in the litter box with little or no urine may have a urinary blockage, which can be fatal within a day or two. Male cats are most at risk. If you see straining with nothing coming out, crying, vomiting or lethargy, go to a vet or emergency clinic immediately.
This guide is general information, not veterinary advice. Your vet's instructions for your pet always come first.
Emergency: go now
- Straining with little or no urine.
- Going in and out of the litter box, or squatting with nothing produced.
- Crying while trying to pee.
- Vomiting, lethargy, hiding and not eating.
- A hard, painful belly.
Call the vet this week
- Peeing small amounts more often.
- Pink or red urine or clumps.
- Peeing outside the litter box.
- Licking the genital area a lot.
- Drinking much more than usual.
These are typical of feline lower urinary tract disease (FLUTD), which includes cystitis, crystals and bladder stones. They need a vet visit, but are not usually an emergency unless your cat cannot pee.
What to track in the litter box
The litter box is the first place problems show. A simple daily record makes patterns visible: the number and size of pee clumps, any straining or blood, water intake, how much wet food was eaten, and anything stressful that happened. Bring it to the vet; it is far more useful than "I think he's been going more".
Lowering the risk
- More water: wet food, water bowls away from food, fountains if your cat likes them.
- One litter box per cat, plus one, in quiet spots; scoop daily.
- Keep your cat at a healthy weight with daily play.
- Reduce stress: hiding spots, high perches, predictable routines, and separate resources in multi-cat homes.
Frequently asked questions
What are the signs of a urinary blockage in a cat?
Straining in the litter box with little or no urine, going in and out of the box repeatedly, crying while trying to pee, vomiting, lethargy and a painful belly. It is an emergency.
How long can a cat survive with a urinary blockage?
A blocked cat can die within a day or two without treatment, so any cat, especially a male, straining with no urine needs a vet immediately.
Why are male cats more at risk of blockage?
Male cats have a longer, narrower urethra, so crystals, mucus plugs or small stones can block it more easily.
How can I lower my cat's risk of bladder problems?
Encourage water intake with wet food and fresh water in several places, keep enough clean litter boxes, help your cat stay at a healthy weight, and reduce stress at home.
Keep it all on paper
Our printable diary has a daily litter box and water log, a stress tracker, a litter box setup checklist, a vet results log and the blockage emergency signs on one fridge sheet.
See the Cat Litter Box & Urinary Health Diary →