
Cats can have liquid stools due to various reasons, including parasites, bacteria, viruses, coccidia, intestinal worms, food intolerances, allergies, and changes in diet. If liquid stools or diarrhoea persist for more than two days, a veterinarian should be consulted. Treatment for diarrhoea in cats may include withholding food for 24 hours or feeding small quantities of a veterinary diet formulated for gastrointestinal issues. In some cases, anti-diarrheal agents, dewormers, or probiotics may be prescribed. To prevent diarrhoea, cat owners should avoid giving their cats dairy products and introduce new foods gradually.
| Characteristics | Values |
|---|---|
| Diarrhea | Liquid stool that flows downhill on its own accord and lasts for more than two days |
| Causes of diarrhea | Infections, dietary changes, stress, primary inflammatory disorders, metabolic diseases, medications, toxins, parasites, allergies, or bacteria |
| Treatment | Prescription medications, special diet, deworming medication, probiotics, withholding food, or increasing fiber intake |
| Prevention | Avoid dairy products, gradually introduce new food, provide plenty of water, and maintain a high-fiber diet |
| Poop color | Red streaks: bleeding in the lower gastrointestinal tract; Light brown/yellow: digestive issues originating in the liver or bile; Green: gallbladder issues or gastrointestinal transit |
| Other issues | Urinating outside the litter box, constipation, soft stool, vomiting |
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What You'll Learn
- Causes of liquid cat stool: Parasites, bacteria, allergies, or stress
- Diarrhea treatment: Vets may prescribe medication, a special diet, or probiotics
- Poop problems: Cats may avoid the litter box due to cleanliness or location
- Cat constipation: Dehydration, sedentary lifestyle, or litter tray issues
- Cat food: A high-fibre diet supports digestion and prevents soft stools

Causes of liquid cat stool: Parasites, bacteria, allergies, or stress
Cats can experience liquid stool due to several factors, including parasites, bacteria, allergies, or stress.
Parasites
Parasites are a common cause of diarrhoea in cats, especially kittens. Parasites such as Toxocara cati, Toxascaris leonina, and Physaloptera can infect cats by ingesting eggs or infected rodents. Other common parasites include tapeworms, roundworms, and giardia. These parasites irritate the intestinal lining, leading to severe diarrhoea. Effective treatments are available, and prevention includes limiting exposure to intermediate and transport hosts, such as cockroaches, crickets, or mice.
Bacteria
Bacterial infections can also cause liquid stool in cats. In some cases, bacteria in the intestine can cause inflammation, leading to diarrhoea. Additionally, certain prescription medications, such as antibiotics, can upset the stomach and cause diarrhoea as a side effect.
Allergies
Food allergies or intolerances can also lead to liquid stool in cats. Specific ingredients in a cat's diet may trigger an allergic reaction, resulting in diarrhoea. Common allergens include dairy products, which many cats cannot digest properly. Changes in diet, such as switching food brands or types, should be introduced gradually to avoid digestive issues.
Stress
Stress is another potential cause of liquid stool in cats. Sources of stress can include environmental changes, new pets, or territorial marking. Identifying and reducing stress triggers can help alleviate digestive issues in cats. If the source of stress is unavoidable, pheromone diffusers or sprays may help calm your cat and improve their digestion.
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Diarrhea treatment: Vets may prescribe medication, a special diet, or probiotics
Diarrhea is a common problem in cats, and it can have various causes, including food allergies or intolerances, inflammatory bowel disease (IBD), colitis, or parasites. If your cat has diarrhea, it is important to consult your veterinarian, especially if it persists for more than two days. Your veterinarian will likely ask for a detailed medical history, perform a physical examination, and may request samples for laboratory testing to determine the underlying cause.
One treatment option for cats with diarrhea is a special diet. In some cases, your veterinarian may recommend a temporary fasting period, followed by a bland, easily digestible diet to help soothe the gastrointestinal tract. This could include boiled chicken or low-fat ground beef, white rice, or cooked pasta. A veterinary gastrointestinal (GI) diet may also be prescribed, which is specifically formulated for easy digestion and to support GI health.
Additionally, your veterinarian may prescribe medication to treat diarrhea. Anti-diarrheal agents can be effective in controlling the condition. If parasites are present, deworming medications will likely be recommended. In cases of intestinal inflammation, antibiotics such as metronidazole may be prescribed.
Probiotics are another important treatment option for cats with diarrhea. Probiotics help to maintain a healthy balance of intestinal bacteria, support digestion, and boost the immune system. There are several probiotic products available, including veterinary probiotics prescribed by your veterinarian, or over-the-counter options such as Purina's FortiFlora or Nutramax's Proviable.
It is important to note that home remedies and over-the-counter treatments should only be administered after consultation with your veterinarian. While some cases of mild diarrhea may resolve on their own, persistent or severe diarrhea can lead to dehydration and metabolic disturbances, requiring hospitalization and intravenous fluid therapy. Therefore, it is crucial to monitor your cat's condition and seek veterinary care if diarrhea persists or is accompanied by other symptoms.
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Poop problems: Cats may avoid the litter box due to cleanliness or location
Cats may avoid pooping in the litter box due to cleanliness, health issues, or problems with the litter box itself. Cats have a much better sense of smell than humans, so if you can smell the box, it is probably offensive to them. Cats may also avoid a dirty litter box if they have matted fur around the rectum, as this can cause pain or discomfort.
If your cat is physically healthy, it may be avoiding the litter box due to behavioural issues, most often related to stress. Changes to a cat's routine or environment can cause stress, which may result in out-of-the-ordinary behaviour. For example, a new baby or pet, or a person moving in or out, can cause stress that leads to inappropriate pooping. However, cats do not poop in the house because they are angry with you.
Cats may also avoid the litter box due to problems with the box itself. For instance, the location of the litter box may be problematic. Cats typically prefer a litter box in a quiet, low-traffic area that they can easily access and that allows them to see in all directions. The box should not be in an area that makes them feel cornered. If your cat needs to leave the litter box in a hurry, it should be able to escape in multiple directions.
The type of litter box and the litter itself may also be factors. Covered litter boxes, those with high sides, or those with a cleaning robot may be scary or difficult for cats to use. Cats often prefer a clumping, unscented litter with a fine or medium texture.
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Cat constipation: Dehydration, sedentary lifestyle, or litter tray issues
Cats typically defecate every 24 to 36 hours. If your cat is pooping less frequently, strains while defecating, or fails to use the litter box, constipation is a likely culprit. Constipation is a common issue in cats, usually mild and treatable with home remedies. However, if it becomes a persistent problem or your cat hasn't passed stool in 48 to 72 hours, consult your veterinarian.
Dehydration
Dehydration is a contributing factor to constipation in cats. Cats are not inclined to drink standing water, so it's important to ensure they stay well-hydrated by providing various water sources, such as wet food, multiple water bowls, pet water fountains, or a dripping faucet. Encouraging hydration can help prevent and alleviate constipation.
Sedentary Lifestyle
A sedentary lifestyle or lack of exercise can lead to constipation in cats. Ensure your cat has opportunities for physical activity and play to promote healthy digestion and reduce the risk of constipation.
Litter Tray Issues
Cats can be particular about their litter trays and may avoid using them if they don't like the location, type of tray or litter, or if it's not cleaned frequently enough. It is recommended to have one more litter box than the number of cats in the household and to place them in quiet, accessible locations away from their food, water, and bed. Experimenting with different types of litter and trays may be necessary to find what your cat prefers.
If your cat is experiencing constipation, it's important to consult your veterinarian to identify and address the underlying cause. They may recommend changes to your cat's diet, environment, or medication. Additionally, monitor your cat's litter box habits and stool consistency regularly to detect any potential issues early on.
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Cat food: A high-fibre diet supports digestion and prevents soft stools
Cats on a liquid diet may experience diarrhoea, which is characterised by liquid stools that last for more than two days. If frequent liquid or semi-liquid stools persist beyond this timeframe, it is advisable to consult a veterinarian. Diarrhoea in cats can be caused by various factors, including dietary changes, food intolerances, allergies, or the presence of infectious agents such as bacteria, viruses, or intestinal worms.
To address diarrhoea and promote healthy digestion in cats, a high-fibre diet is often recommended. Fibre aids in regulating the digestive system, helping to prevent both constipation and diarrhoea. It adds bulk to the stool, making it softer but still formed, and easier for cats to pass. Additionally, fibre can assist in weight management by promoting a sense of fullness and supporting the growth of beneficial gut bacteria, contributing to overall gastrointestinal health.
When considering a high-fibre diet for your cat, it is important to distinguish between soluble and insoluble fibre. Soluble fibre, derived from plant pectin and gums, helps regulate blood sugar, making it beneficial for diabetic cats. Insoluble fibre, on the other hand, does not dissolve but helps increase stool volume and frequency. Examples of insoluble fibre include cellulose, wheat bran, oat bran, and vegetables like carrots, leafy greens, and green beans. These sources of fibre add bulk to the stool, aiding in constipation relief and promoting regular bowel movements.
It is worth noting that while fibre can be beneficial for cats, too much fibre can have negative consequences. Excessive fibre intake may inhibit the secretion of pancreatic enzymes responsible for digesting protein, leading to decreased nutrient absorption and potential health issues. Therefore, it is essential to consult with your veterinarian before making significant dietary changes, especially if you are considering a high-fibre diet for your cat. They will consider your cat's overall health and current diet to determine the best approach. Additionally, it is crucial to gradually introduce new high-fibre foods to avoid upsetting your cat's stomach.
In conclusion, a high-fibre diet can indeed support digestion and prevent soft stools in cats. By incorporating the right amount of dietary fibre, you can promote digestive regularity, prevent constipation and diarrhoea, and support overall gastrointestinal health in your feline companion. However, it is important to consult with a veterinarian and make dietary changes gradually to ensure the well-being of your cat.
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Frequently asked questions
Liquid poop, or diarrhoea, can be caused by a number of factors, including parasites, bacterial infections, allergies, or stress. If diarrhoea persists for more than two days, contact your veterinarian.
It is important to keep your cat hydrated. You can give them rice water, which may help improve digestion and provide beneficial minerals. In some cases, your veterinarian may advise withholding food for up to 24 hours or recommend a veterinary diet.
Diarrhoea is characterised by liquid or semi-liquid stools that flow downhill on their own. You may also notice staining and soiling of the fur around the back end. Other signs include weight loss, dehydration, and blood in the stool.
If your cat is pooping outside the litter box, it could be due to territorial marking, objection to the litter box's location or cleanliness, or a bladder infection. Ensure that the litter box is clean and in a suitable place. If the issue persists, consult your veterinarian.











































