Veterinarian Explains: How to Recognize Normal Cat Poop and Key Health Management Tips

Do you have the impression that cat poop is small and hard? In reality, normal cat poop is not like that. Hard, pebble-like stool might be a sign of constipation.

In this article, we will explain in detail what normal cat stool looks like.

What are the characteristics of normal cat stool?

Normal cat stool contains approximately 70% moisture. It should be well-formed, and while there may be some slight cracking on the surface, it should feel slightly moist. It should not lose its shape when picked up.

The color ranges from brown to dark brown. The size is roughly equivalent to an index finger, though this varies depending on the type of food being eaten. It should have very little odor, smelling only of digested food.

Understanding your cat's health through their stool

Observe the stool color

Normal stool is brown to dark brown. If it is too dark or too light, it may indicate a problem in the digestive tract.

Black stool may indicate bleeding in the nose, mouth, or upper digestive tract (stomach to small intestine). The blood turns black due to oxidation while passing through the digestive tract. Stool may also appear black if the cat is taking iron supplements or activated charcoal as part of a treatment.

Red stool may indicate bleeding in the large intestine or anus. Because the distance to the anus is short, the blood appears as fresh, bright red. In many cases, it is accompanied by mucus.

Green stool may indicate indigestion. Digested food mixes with bile in the duodenum, which gives stool its color. While bile itself is yellow to green, it usually turns brown within the intestines. If the intestines are moving too quickly due to conditions like enteritis, the bile passes through unchanged, resulting in greenish stool.

Yellow stool may also indicate indigestion. If bile is not broken down in the intestines due to conditions like severe enteritis, yellow stool is produced. Pancreatic diseases such as exocrine pancreatic insufficiency can also turn stool yellow.

White to grayish-white stool may suggest diseases of the liver, gallbladder, or pancreas. If bile is not produced, not excreted, or if fat is not being broken down, the stool may appear white.

How to distinguish between constipation and diarrhea

Because cat poop is generally thought of as being hard, diarrhea might be easier to identify.

Diarrhea ranges from loose, soft stools to completely liquid, watery, or muddy stools. Soft stool is very mushy, characterized by losing its shape when you try to pick it up. Liquid stool consists almost entirely of fluid.

Constipated stool is hard, pebble-like, and heavily cracked. Normal stool may have slight surface cracks but is usually formed into a continuous piece. Stool that is broken into small, dry fragments may be a sign of constipation. Additionally, while it is normal for cats to defecate two or three times a day, anything less than that could be constipation. If your cat strains and vocalizes while trying to pass stool, or if they spend over a minute in the litter box without producing anything, they may be constipated.

Early action when abnormalities are observed

Diseases that cause diarrhea or constipation

Stool abnormalities that resolve within a day may simply require monitoring. However, if they persist, it could be a sign of an underlying medical issue.

Common diseases causing constipation include chronic kidney disease, megacolon, and intestinal obstruction due to tumors.

Common diseases causing diarrhea include enteritis, colitis, liver disease, pancreatic disease, parasitic infections, and neoplastic diseases.

These diseases will not resolve on their own and can worsen, potentially becoming life-threatening.

Diseases indicated by abnormal stool color

Stool colors such as red, black, green, yellow, or white can all indicate illness.

Red may indicate diseases of the large intestine or anus. Even minor anal injuries from constipation can cause blood to appear on the stool. Tumors or ulcers in the large intestine can also lead to bloody stool. Severe bloody diarrhea can also occur due to viral, bacterial, or parasitic colitis.

Black may indicate bleeding from the mouth, nose, or upper digestive tract. It is seen in conditions involving hemorrhage, such as gastroenteritis, stomach ulcers, nosebleeds, oral tumors, or tumors in the stomach or intestines.

Green and yellow are indicative of indigestion. These colors often appear when intestinal transit is accelerated due to conditions like enteritis. They are also seen in diseases that cause intestinal inflammation, such as immune disorders, parasitic infections, and allergies.

White may indicate diseases of the liver, gallbladder, or pancreas, such as liver disease, bile duct obstruction, or exocrine pancreatic insufficiency.

When you notice abnormalities

Changes in stool shape or color may indicate internal organ disease. While it may improve in a few days, it is best to visit a veterinarian as soon as possible. Inform your vet about how long the symptoms have persisted and whether there are any other symptoms. If possible, bring a fresh stool sample with you.

Care for maintaining normal stool

Providing a balanced diet

Feeding your cat anything other than proper cat food can lead to internal organ diseases. Stick to cat food and never give them human food.

Sometimes, therapeutic diets are necessary for treating constipation or diarrhea. Be sure to follow your veterinarian's instructions.

Water intake and constipation prevention

Cats can become constipated because they don't drink enough water. Chronic kidney disease can also prevent the body from retaining water, which leads to constipation. Therefore, you should encourage hydration.

Place multiple water stations throughout the house. Provide bowls that suit your cat's preferences; cats often prefer ceramic or glass. While fresh water is best, some cats prefer water that has sat out overnight or water straight from the tap. Observe what your cat likes.

There are oral rehydration solutions available for cats, and switching to wet food is another great way to increase moisture intake.

The importance of stress management and environmental maintenance

Stress can trigger pancreatitis, which may lead to exocrine pancreatic insufficiency. It can also cause enteritis, leading to persistent diarrhea or bloody stool.

Stress in cats causes not only stool problems but also urinary issues. Stressors include moving house, changes in the number of family members (people or pets), worsening relationships with other household pets, and noise. Try to provide a low-stress lifestyle, including spaces where your cat can hide and feel safe. Synthetic pheromone products are also available to help calm cats.

Regular checks for healthy stool

Points to note during daily litter box cleaning

You likely clean the litter box every day or after each use. Beyond just cleaning, pay attention to the frequency, quantity, and color of both the stool and urine. If you have multiple cats and cannot tell who produced which waste, using a smart litter box that tracks individual usage can be helpful.

Tips for observing changes in stool

Regular observation is the best way to spot abnormalities, including changes in odor. Even if the stool is buried, higher moisture content often causes a large amount of litter to stick to it. If it looks different than usual, consult your veterinarian promptly.

Checking stool during health exams

Stool tests during routine health exams are usually performed using only the tiny amount of stool that remains on a thermometer after a temperature check. These tests, such as direct smear or fecal flotation, provide limited information. Therefore, if you notice an issue, bring a fresh sample to the animal hospital.

Summary

Abnormalities in stool may suggest that something is wrong internally. While diarrhea is easy to spot, constipation can be harder to notice. Similarly, if you aren't familiar with your cat's normal stool color, it can be difficult to identify abnormalities. Make it a habit to carefully check the condition and color of your cat's stool during daily litter box cleanings.