Some Possible Reasons for a Cat's Upset Stomach

Some Possible Reasons for a Cat's Upset Stomach


As cat owners, we may frequently come across vomit on our floors and assume it's our feline friend. However, it's important to understand that cats have delicate stomachs Vomiting and diarrhea are common occurrences. But we need to minimize gastrointestinal discomfort in cats as much as possible. Here is what new cat owners need to know about the cat digestive system.


Many people assume that cats love to eat fish because of the portrayal in cartoons. However, cats can not digest and absorb the nutrients from fish very well, and they have not evolved to rely on fish as a primary energy source. It's worth noting that not all cats enjoy fish, and some may even have allergies that lead to oral problems or stomach upset.

It's not a good idea to give your cat raw fish. It is because raw fish has an enzyme that can break down vitamin B1 (thiamine), which can lead to various symptoms such as anorexia, coordination issues, balance problems, aggression, and seizures. Research shows that most cats who suffer from thiamine deficiency usually eat a lot of raw fish, including grass carp, herring, cod, and mullet, and so on. Aside from thiamine deficiency, feeding your cats raw fish also increases the risk of them getting infected with parasites.

Amosijoy-Blog Picture: A cat is stealing fish.


While some cats may not have issues with drinking milk, the majority are intolerant to lactose and can experience diarrhea. As young cats have weaker immune systems, it's best to avoid giving them milk. Sheep's milk or lactose-free milk is a better alternative.

Amosijoy-Blog Picture: A cat is drinking milk.

High-sugar Foods

Cats are not sensitive to sweetness and lack the enzymes to break down sugar, but it's important to avoid high-sugar foods as they can worsen hair loss.

Amosijoy-Blog Picture: Cat and a heart-shaped lollipop.

Born with a Weak Stomach

If a cat experiences diarrhea or soft stool, probiotics can be a helpful solution since their stomachs are generally sensitive. Some cats may benefit from probiotics or digestive enzymes to aid digestion. Consult with a veterinarian before giving them any supplements.

Amosijoy-Blog Picture: Cat Vomit.


It's common for cats to lick their fur when they are bored, but this can lead to hairballs forming in their stomachs, causing them to vomit. To help with their digestive system, you can give them wheat seedlings, which can help the hairballs pass through their system. It's recommended to start giving them this after they're 4 months old, but if their stomach is sensitive, it's best to wait until they're 1 year old.

Amosijoy-Blog Picture: Some hairballs from a British shorthair cat.


If your cat experiences pica, it may be due to poor nutrition or absorption. While cats are carnivores, they also need vitamins and dietary fiber. To ensure they are getting a balanced diet, consider feeding them some balanced nutrition cat food.

Amosijoy-Blog Picture: A cat was gnawing on a branch.

Sudden Changes in Your Cat's Diet

Avoid sudden changes in your cat's diet, as this can also cause gastrointestinal issues. Slowly introduce any new foods to your cat's diet to prevent stomach upset or vomiting.

Amosijoy-Blog Picture: Two cats are sniffing cat food in a bowl.

In Conclusion

It's common for cats to experience vomiting and diarrhea, but it is important to identify which foods may be causing stomach problems. Some cats may have food allergies or sensitivities, so monitor their reactions to different foods and consult with a veterinarian if necessary. A cat's daily diet is a key factor in its overall health and longevity. It's crucial to be aware that there are 10 human foods that can be toxic to cats. For additional information, please refer to our article published on April 29th.


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