What Your Cat's Litter Box Is Telling You: A Stool Guide
Your cat's litter box is a daily health report. Colour, shape, and frequency of stool reveal a lot about digestion and hidden illness. This guide helps you tell normal from worrying, so you know when to relax and when to call the vet.
Quick answer
Healthy cat stool is brown, firm but not hard, and shaped like a formed log, passed about once a day. Changes in colour (black, red, pale, or grey), consistency (watery, mushy, or rock-hard), or frequency can signal diet issues, parasites, or illness. Occasional soft stool often settles, but blood, black stool, or diarrhoea lasting more than a day or two warrants a vet visit.
Your cat's litter box is a daily health report.
What normal looks like
Most healthy adult cats pass one, sometimes two, stools a day. Normal stool is a rich brown, firm enough to hold its shape but not dry and crumbly, and shouldn't smell overwhelmingly foul. It should come out without straining. Getting to know your cat's usual pattern is what makes any change easy to spot.
Reading consistency
Consistency is the most useful clue. Firm, formed logs are ideal. Soft or mushy stool that loses its shape suggests mild upset, often from a recent food change, stress, or a treat that didn't agree. Watery diarrhoea means the gut is moving too fast and can dehydrate your cat quickly, especially if frequent. Hard, dry pellets point to constipation, which is common in older or under-hydrated cats.
Scooping daily lets you notice changes in stool before they become a problem.
Reading colour
Colour adds important context:
- Brown: normal.
- Black and tarry: possible digested blood from the upper gut, see a vet.
- Red streaks: fresh blood from the lower gut or colon, often with straining.
- Pale, clay, or grey: possible liver or bile issue, worth checking.
- Green or unusual tints: sometimes diet, sometimes rapid transit.
Frequency and effort
Straining, crying in the box, or producing only tiny amounts can signal constipation, or in some cases a urinary blockage, which is a true emergency, so make sure you can tell whether your cat is passing stool or unable to urinate. Going several days without a stool, or many watery trips an hour, both deserve attention.
Common causes of soft stool
Everyday culprits include a too-fast food switch, a new treat or table scrap, mild stress, hairballs, or intestinal parasites. Kittens and newly adopted cats commonly carry worms. A gradual diet transition, parasite control on your vet's advice, and a calm environment resolve many mild cases.
A quick photo or note helps your vet see the pattern if problems recur.
Quick FAQs
How often should a cat poop? Usually once or twice a day; going every other day can be normal for some cats if the stool is comfortable.
Is a little blood an emergency? A single streak with an otherwise well cat can be minor, but repeated or significant blood, or black stool, needs a vet.
What if my cat is constipated? Improve hydration with wet food and water, and see your vet; never give human laxatives.
Should I bring a stool sample to the vet? Yes, a fresh sample (within a few hours) helps check for parasites and speeds diagnosis.