Pet Health

Leptospirosis in Cats

Discover essential insights about leptospirosis in cats, including symptoms, prevention tips, and treatment options to keep your feline friend healthy and safe.
Author: Veterinary Team
Dial A Vet
Updated
June 6, 2025
|
Published
June 6, 2025
A tabby cat resting with symptoms of leptospirosis, including lethargy and loss of appetite, in a veterinary setting.

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As a cat parent, nothing is more concerning than seeing your furry friend unwell. One health issue that often flies under the radar is leptospirosis—a bacterial infection that can affect cats, though it’s more commonly associated with dogs. If you’ve heard about leptospirosis in pets, you might be wondering, "Can my cat get it? How dangerous is it? And how can I protect them?" Let’s break it all down so you can feel confident in caring for your feline companion.

⚠️ What to Watch For

Leptospirosis in cats can be tricky to spot because the symptoms often overlap with other illnesses or might not appear at all. However, when symptoms do show, they can vary in severity.

Keep an eye out for these potential signs:

  • Lethargy or unusual tiredness
  • Vomiting and diarrhea
  • Loss of appetite
  • Increased thirst or urination
  • Fever
  • Yellowing of the skin, gums, or eyes (jaundice)
  • Difficulty breathing

In severe cases, leptospirosis can lead to kidney or liver damage, which is life-threatening if left untreated. If your cat is showing any of these signs, it’s important to take action quickly.

🔍 Possible Causes

Leptospirosis is caused by a type of bacteria called Leptospira. Cats can become infected when they come into contact with contaminated water, soil, or the urine of an infected animal, such as rodents, wildlife, or even other pets. Here are some common risk factors:

  • Drinking from puddles, ponds, or stagnant water
  • Living in areas with high rodent or wildlife activity
  • Outdoor access, especially in rural or suburban areas
  • Exposure to infected animals’ urine

While leptospirosis is less common in cats than in dogs, outdoor cats or those with access to contaminated environments are at a higher risk.

✅ What You Can Do at Home

If you suspect your cat may have been exposed to leptospirosis, there are steps you can take to minimize their risk and monitor their health:

  • Provide clean, fresh water at home to discourage outdoor drinking.
  • Keep your cat indoors or supervise outdoor time to limit exposure to contaminated areas.
  • Regularly clean and disinfect areas where your cat might come into contact with potentially contaminated materials, such as litter boxes.
  • Watch for any symptoms mentioned earlier and note any changes in behavior or appetite.

Although these steps can help reduce risk, they’re not a substitute for professional veterinary care if your cat is showing symptoms or you believe they’ve been exposed to leptospirosis.

💡 When to Call a Vet

Early intervention is key when dealing with leptospirosis. If your cat is exhibiting any concerning symptoms, such as vomiting, jaundice, or increased thirst and urination, contact your vet immediately. A vet will likely recommend diagnostic tests, such as blood work or urine analysis, to confirm the infection.

Leptospirosis is treatable, especially when caught early. Treatment typically involves antibiotics to fight the infection and supportive care, such as fluids or medications to manage symptoms. Without prompt treatment, however, the infection can lead to severe complications like kidney or liver failure.

If you’re unsure whether your cat’s symptoms warrant a trip to the clinic, you can always consult a licensed veterinarian online for guidance.

FAQs

Q: Can indoor cats get leptospirosis?
A: While the risk is lower for indoor cats, it’s not zero. Contaminated water or soil can be brought into your home on shoes, or an infected rodent could potentially expose your cat. Keeping your home clean and rodent-free can help reduce the risk.

Q: Is leptospirosis contagious to humans?
A: Yes, leptospirosis is a zoonotic disease, meaning it can spread from animals to humans. Practice good hygiene, such as washing your hands after handling your cat or cleaning their litter box, to minimize your risk.

Q: How is leptospirosis diagnosed in cats?
A: Your vet will likely perform blood tests, a urine analysis, and possibly other diagnostic procedures to confirm the presence of Leptospira bacteria.

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References

While every effort is made to ensure the accuracy of this content - including vet review where applicable - this article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is unwell or you are concerned, please speak with a licensed veterinarian. You can book a $49 online consultation with our veterinary team  😄
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