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.

E. Coli Infection in Cats: Vet Approved Signs, Causes & Care

sick orange cat

E. coli, or Escherichia coli, is a bacterium that sits in most living mammals’ digestive tracts. It can be found in human and animal urine and feces. It’s usually a commensal organism, part of the normal bacterial flora of the body. However, it can cause life-threatening illness in certain circumstances. E. coli infections in healthy adult cats are pretty rare. But kittens and older cats can develop this infection because their immune systems are not quite as up to par as healthy adult cats. It’s important to note that if your cat is immunocompromised or has health issues, it’ll be easier to develop an E. coli infection.

In this guide, we’ll tell you what E.coli is in cats, the causes, and the signs you should look out for with your feline friend. We’ll also provide tips for caring for a cat with an E. coli infection, so stay tuned.

divider 3 paws

What Is E. Coli in Cats?

E. coli in cats is a bacterium that usually lives in the gastrointestinal tract without causing any problems. There are hundreds of strains of this bacteria, and most of them are harmless to your feline. The problem occurs when E. coli enters parts of the body that it doesn’t belong in or when a harmful strain of the bacteria is introduced through the cat’s system. Lab tests are required to diagnose this infection because the signs vary depending on the strain, location, and the individual cat.

This bacterial infection is more often seen in kittens in the first few weeks after birth. There have been over 700 subtypes of E. coli1 identified so far.

sick cat
Image Credit: sick cat, Flickr

What Are the Signs of E. Coli in Cats?

You’ll need to be on the watch out for a few signs of an E. coli infection in your cat, especially if you have a young kitten or your cat is older. It’s important to note that E. coli can cause different types of illness, which will cause various health signs.

Urinary Tract Infection

  • Urinating outside of the litter box
  • Frequent urination
  • Foul-smelling urine
  • Straining when trying to urinate
  • Fever
  • A tender abdomen
  • Bloody urine
  • Pain when urinating and meowing loudly

Pyometra (Female-uterus infection)

  • Distended abdomen
  • Poor appetite
  • Lethargy
  • Excessive panting
  • Increased thirst
  • Vaginal discharge

Gastrointestinal

  • Vomiting
  • Diarrhea, sometimes bloody
  • Lack of appetite

Colibacillosis (Kittens)

  • Vomiting
  • Lethargy
  • Dehydration
  • Decreased body temp
  • Severe diarrhea
  • Lack of appetite

If you see any of these signs in your cat, it’s best to contact your vet.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

divider 3 paws

What Are the Causes of E. Coli in Cats?

E. coli infections are caused by an overgrowth of the bacteria in the animal’s body; each infection that results from an E. coli infection has its own method of transmission. For example, a UTI can be caused by ascending infection- from the outside-in, pathogenic E. coli travels from the external body surface around the anus to the urinary tract, which causes an infection to set in. While this doesn’t usually cause a problem for cats in good health, it could be if your cat is older or has an underlying issue.

Gastrointestinal infections resulting from an E. coli infection could come from your cat’s undercooked or raw food. Therefore, many vets caution against putting your cat on a raw meat diet.

Newborn kittens can end up with the infection in these ways:

  • During birth, when the bacteria is in the birth canal
  • Before they are born
  • While they are nursing
  • When the kitten is living in unsanitary conditions

How Do I Care for a Cat with E. Coli?

Once your pet has been seen by a veterinarian they may send you home with medications to give your cat. Antibiotics are the standard treatment for E. coli in cats, and supportive care is used. Sometimes, intravenous fluids are used as well to restore fluid balance. In cases of newborn kittens with an E. coli infection, aggressive treatment is necessary for their survival.

After treatment, when you get your cat home from the vet, it’s best to give them the space they need to recover. Make sure they have easy access to all resources, such as food, water, and litter trays. Keep a close eye on your pet to ensure they are doing okay, and remember to love and pamper them. Ensure good hygiene to protect yourself and other pets from infection.

tired sick cat lying on bed
Image Credit: Natata, Shutterstock

divider 3 paws

Frequently Asked Questions (FAQ)

How Do I Prevent an E. Coli Infection in My Cat?

As E. coli is found frequently in the environment and inside cats’ bodies it cannot easily be prevented. Ensuring good environmental hygiene, such as cleaning food and water bowls, litter trays, and bedding. Monitor for signs of illness and discuss any concerns with your veterinarian.

What Can I Use to Get Rid of E. Coli in My Home?

E. coli from raw food can hang around the house for up to 28 days. Ensure good hand hygiene practice and disinfect food preparation surfaces regularly. Keep separate cutting boards for raw and cooked meats.

divider 3 paws

Conclusion

E. coli infections in cats can affect different body systems and must be treated effectively and promptly. If you see any of the signs of E. coli infection, contact your vet for an appointment. You can reduce the chances of the bacteria infecting your cat or family by thoroughly cleaning and sanitizing food prep areas, keeping your clean, and scheduling regular visits to your veterinarian.

BF000A


Featured Image Credit: Pixabay

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.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Abscesses in Cats: Causes, Signs & Care (Vet Answer)

If your cat has a lump under their skin that is painful, either firm or, more often, soft to the touch, and has...

huge abscess on cat's face

6 Health Risks of Keeping a Dirty Litter Box: Vet-Approved Sickness Signs

Cleaning the litter box is one of the most laborious (not to mention smelly) tasks a cat owner must do every day, so...

woman cleaning cat litter

Salmonella in Cats: Causes, Signs & Prevention (Vet Answer)

Salmonella is a major public health concern because it can affect most animals and humans. Salmonellosis is the infection caused by Salmonella bacteria....

vial of blood tested for salmonella

Ear Cancer in Cats: Causes, Signs & Care (Vet Answer)

Ear cancer is a relatively common occurrence in cats. Two main types of tumors affect a cat’s ears. These are ear canal tumors...

cat-with-ear-infection

More related

infusion of liquid medicine by a veterinarian

Clavamox for Cats: Uses, Doses, & Side Effects (Vet Answer)

If you take your feline fur baby to the veterinarian because they are feeling bad, a veterinarian will probably give them an examination...

vet checking up the cat

Lymphoma in Cats: Causes, Signs & Care (Vet Answer)

Lymphoma, or lymphosarcoma, is the most common cancer affecting cats. It is a malignant type of cancer affecting the lymphatic system, a network...

red haired cat in litter box

How to Prevent Urinary Tract Infections in Cats: Our Vet Explains the Signs

Urinary tract infections (UTIs) are one of the more common issues seen in cats, especially as they age. A variety of factors influence...

sad, bored or sick cat

Feline Distemper: Signs, Causes, and Care (Vet Answer)

Distemper in cats is also called feline panleukopenia, so we will use the terms interchangeably in this article. It is a viral disease...

Keep reading

Why Is My Cat Always Hungry? 10 Vet-Verified Reasons for Excessive Eating

There are many different reasons why a cat may seem excessively hungry. At times, the reasons might be normal—an overly active cat that receives plenty of exercise will probably be hungrier than a cat that is sedentary. At other times,...

tabby cat eating from metal bowl

How Much Is a Rabies Shot for a Cat? (2025 Vet-Reviewed Update)

Vaccinations are crucial to protect your cats from disease. Arguably, one of the most important vaccines for cats is rabies. It’s not only required by law in many states and jurisdictions, but it’s the best defense against a devastating viral...

man holding syringe to inject into cat

What Can My Cat Eat at Thanksgiving? 16 Vet Reviewed Do’s & Don’ts

Anyone who thinks dogs are the biggest beggars of food in the pet world clearly hasn’t met a cat! However, not all people food is good for our pets. When it comes to Thanksgiving, you may want to celebrate with...

What Can My Cat Eat at Thanksgiving

Why Does Your Cat Rub Their Head on You? 5 Vet-Reviewed Reasons

You’ve likely had your cat rub their head on you multiple times. While cats are independent creatures that don’t trust easily, they are usually loyal for life once they do. However, even after you’ve established a bond with your cat,...

cat rubbing its head against the owner's legs

4 Reasons Why Cats Drool & What to Do About It

Cats are much less likely to drool than dogs, which is why the phrase, “Cats rule, and dogs drool,” is so appropriate. In fact, some cats never drool in their lifetime. However, other cats might do so frequently. There are...

Orange stray cat drooling with one hand scratch its chin

What Is Cat Nuzzling? 4 Vet-Approved Behavior Explanations & Info

For most cat parents, it warms their hearts for their cat to climb up in their lap and nuzzle their necks or anywhere else. Usually, a cat will knead your chest or lap while nuzzling and purring. It makes you...

black and white cat nuzzling on man's chin

Female Cat Behavior After Spaying: Vet Reviewed Changes to Expect

One of the side effects of spaying a female cat is behavioral changes. Some are short-term and directly related to the pain your cat is likely in after surgery. Plus, some other side effects are common as well, which can...

cat and owner and vet

Why Does My Cat Reach His Paw Out to Me? 9 Vet-Verified Reasons

There are several reasons that your cat may reach out to you, whether they are lying down or lightly tapping you with their paw while standing up. As you might imagine, the most obvious reason is to try to get...

cat reaching out