Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Ask Dr. Paola – Help! My Cat Gets Diarrhea from Wet Food! (March 23, 2026)

Share

adp march 23

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our readers better understand their cat’s health and well-being.

Whether you’re a new pet parent or a seasoned cat lover, Dr. Paola is here to provide answers to your most pressing questions. From nutrition tips and preventive care to troubleshooting common behavioral issues, Dr. Paola is ready to offer insights that will keep your kitty happy, healthy, and feline fine. Stay tuned for expert guidance on a range of topics that matter most to you and your cat, so you can make informed decisions and provide the best possible care for your furry companion. ‎

Have‎ a ‎question? Send it in here!

divider single cat paw oct 2024

Help! My FIV Cat is Sleeping More than Usual!

“Oreo is a male stray that my boyfriend and I took in 4 years ago. He may be about 5 years old. He’s been neutered and microchipped. My question is, he has FIV and lately has been sleeping more than usual, and he has one eye that tears and scabs up. He is indoor/outdoor, but lately indoor. In the past, we had eyedrops for that one eye. Should I be worried about him? It’s out of character for him to sleep so much. Thank you”
– Kim

Dear Kim,

It is understandable to feel concerned when a cat’s routine changes, especially when they are living with feline immunodeficiency virus, or FIV. Many FIV-positive cats live long and comfortable lives, but their immune system is a bit like a shield with small gaps in it. Because of this, infections that might be mild in other cats, particularly eye or respiratory infections, can sometimes linger or recur. Increased sleeping, combined with tearing and scabbing around one eye, can indicate that the eye is irritated or infected again, or that there may be inflammation of the conjunctiva or cornea. Cats often rest more when they are not feeling well, much like people who prefer to stay in bed during a cold.

Because eye disease can progress quickly in cats, especially if there is a corneal ulcer or deeper infection, it would be wise to have Oreo examined by a veterinarian rather than restarting old eye drops. Different eye problems require very different medications, and some drops that are safe for one condition can worsen another. A physical exam can also help determine whether his increased sleep is simply related to discomfort from the eye or if there are other underlying concerns, which is particularly important for cats with FIV.

Until he is seen, keeping him indoors is a good step since it reduces exposure to additional pathogens and prevents debris from irritating the eye further. If you notice squinting, cloudiness, swelling, reduced appetite, or a sudden drop in energy, that would make a prompt veterinary visit even more important. I hope this helps!

– Dr. Paola

divider cat paw scratch oct 2024

Help! Wet Food Causes My Cat Diarrhea!

“Hi Dr. Paola,

My name is Lulu, and I own a feline. He is my little buddy, Belito. I would like to know why the wet canned cat food I have been feeding for four months or so now causes him diarrhea. The brand name of the cat food is ‘I and Love and You’ grain-free recipe. Should I look into switching his food?” – Lulu

Hi Lulu.

If Belito has been eating the same canned diet for about four months and the diarrhea appeared only recently, the food itself becomes less likely to be the primary cause. When a cat develops loose stool after tolerating a diet well for several months, it is similar to a person who has eaten the same breakfast every day for years and suddenly develops stomach upset. We would first look for something new in the environment rather than blaming the breakfast. In cats, common explanations include intestinal parasites, a change in treats or table foods, stress in the household, ingestion of something unusual, or shifts in the intestinal microbiome.

Food intolerance can develop over time, but it is not the first explanation when a diet has been stable for months. In these situations, evaluating a fresh fecal sample is often the most practical starting point because parasites such as Giardia or Tritrichomonas can cause persistent diarrhea in otherwise bright, active cats. If the diarrhea becomes watery, contains blood, or Belito shows decreased appetite or energy, a prompt in-person veterinary visit would be the safest next step.

Sincerely,
– Dr. Paola

divider cats oct 2024

This article is a part of our weekly Ask Dr. Paola series

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting About the Importance of Spaying/Neutering, Cat Retail Shopping Ban & Red-Level Storms | Chatty Cattys, Episode 30

In this episode of Catster’s Chatty Cattys podcast, Nicole and Dr. Karyn are celebrating a major legal win for pets before diving into...

Is Your Cat Happy? Here’s How You Can Tell

Cats have a reputation for being indifferent, even inscrutable. But despite their seemingly ambivalent appearance, cats experience many emotions, including happiness, and they...

Human Brains Age Like Cats – New Study Debunks the 7-Year Rule

If you’ve ever caught your senior cat staring blankly at a wall, wandering the halls at 3 am, calling out for no clear...

Chatting with Devin About Here! Have a Kitten, Fostering, & Why Two Are Better Than One | Chatty Cattys, Episode 29

In this episode of Catster’s Chatty Cattys podcast, Nicole & Dr. Karyn sit down with Devin, the founder and one-woman show behind “Here...

More related

How to Remove a Tick From a Cat: Vet-Approved Steps & Advice

Removing a tick from a cat is not difficult, but it may not be as easy as you think. The hardest part is...

Catster Photo Contest: Cats of the Week Winners (January 29, 2026)

Every week our team gets the privilege of sorting through our readers photos to choose what cats will win this weeks contest! See...

My Cat Just Threw Up, What Should I Do? (6 Vet-Approved Treatment Tips)

Vomiting is common in all cats, but excessive throwing up is not normal. If your cat is throwing up excessively every few weeks,...

10 Best Airline-Approved Cat Carriers for Planes In 2026 – Reviews & Top Picks

Many airlines allow cats to travel on their planes as carry-on luggage, although you will need to check with your airline because acceptance...

Keep reading

Why Does My Cat Take My Spot? 5 Vet-Verified Reasons

When you became a cat parent, you probably didn’t expect to regularly give up your comfortable seat. Many cats have a knack for stealing our seats, whether it is the hard dining chair or couch. Getting up from your seat...

Scottish Shorthair cat lying on a velvet couch

How Many Bones Do Cats Have? Vet-Approved Feline Anatomy Explanation (With Infographic)

Your average house cat has around 230 bones in their body. That’s quite a few more than the 206 bones in a human’s body! Felines have some interesting adaptations related to their skeletons. For example, cats have a flexible spine...

brown black tabby maine coon cat

Why Do Cats Like Straws? 6 Likely Reasons

Most cat owners can attest that cats do strange things. Whether your cat sleeps in the sink or finds a way to get stuck in the window blinds, there’s rarely a dull moment with them around. Another common cat quirk...

cat playing with straws in glass

How Much Exercise Does My Cat Need? Vet-Approved Advice & Methods

Cats are generally curious and playful pets that require a certain amount of daily exercise. The amount of exercise will vary depending on your cat’s age, breed, and health condition. In general, cats require at least 30 minutes of exercise...

blue tabby maine coon cat running outdoors

Why Do Cats Like Their Ears Rubbed? 5 Vet Reviewed Reasons

When you pet your cat, you’ve likely noticed that they want more of it. But why is it that cats like it when you rub their ears, how can they tell you they like it, and what are some other...

cat with a ear hematoma

Can Cats Eat Beef Jerky? Vet-Approved Health and Nutrition Advice

Jerky has been around in human diets for millennia. Civilizations spanning the globe all have methods and recipes for drying and curing meat. It’s a great way to ensure that meat doesn’t spoil and lasts for extended periods. While jerky...

Can Cats Eat Beef Jerky

Can Cats Eat Canned Chicken? Vet-Reviewed Info to Know

Everyone knows that cats are obligate carnivores. In other words, they evolved to eat meat entirely. They don’t typically eat anything else, though they can stomach some other foods. For this reason, giving them canned chicken may seem like a...

Can Cats Eat Canned Chicken

Can Cats Eat Carob Chocolate Substitute? Vet-Reviewed Facts & FAQ

Chocolate is well-known for being toxic to dogs, and most cat owners know it is toxic to cats, too. If you are familiar with carob, a natural substitute for chocolate, you may be wondering if it also comes with those...

Can Cats Eat Carob Chocolate Substitute

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.