Can Cats Get Lyme Disease? What You Need To Know
Uncover the truth about Lyme disease in cats: rarity, symptoms, prevention strategies, and vital treatment insights for cat owners.

Lyme disease, caused by the bacterium Borrelia burgdorferi, is primarily associated with dogs and humans, but cats can contract it through bites from infected ticks. While extremely rare in felines due to their grooming habits and natural resistance, outdoor cats in wooded or grassy areas face higher risks. Prompt tick removal and prevention are key to avoiding transmission, as it typically requires 24-48 hours of attachment.
What Is Lyme Disease?
Lyme disease is a tick-borne illness triggered by spirochete bacteria transmitted via the saliva of infected black-legged (deer) ticks or similar species. In cats, the bacteria invade tissues like joints, skin, and kidneys if untreated. Unlike dogs, where symptoms are common, most cats remain asymptomatic even after exposure, highlighting their resilience.
The disease progresses in stages: early localized infection shows within weeks, followed by disseminated effects on joints and organs. Transmission peaks in warmer months when ticks are active, but can occur year-round above 4°C (40°F).
Can Cats Get Lyme Disease?
Yes, cats can get Lyme disease, though it’s uncommon. Infection occurs when an infected tick feeds on the cat, transferring Borrelia burgdorferi. Cats’ fastidious grooming often removes ticks before the 36-48 hour window needed for transmission, reducing incidence. Studies confirm cats test positive occasionally, but clinical disease is rare—often without noticeable signs.
- Risk factors: Outdoor access in endemic areas like the northeastern U.S., Europe.
- Prevalence: Far lower than in dogs; cats may carry infected ticks indoors, posing risks to humans or other pets.
Symptoms of Lyme Disease in Cats
Symptoms in affected cats mimic those in other species but appear 2-5 months post-bite, or up to 4 weeks in early stages. Common signs include:
- Fever and lethargy
- Loss of appetite and weight loss
- Joint stiffness, swelling, lameness, or shifting leg pain
- Difficulty breathing or walking with an arched back
- Swollen lymph nodes near bite site
- Rare kidney issues: vomiting, diarrhea, increased thirst/urination, fluid buildup (glomerulonephritis)
Many cats show no symptoms despite positive tests, emphasizing the subclinical nature in felines.
Causes of Lyme Disease in Cats
The sole cause is bites from infected ticks, primarily Ixodes scapularis (black-legged tick). Immature ticks acquire bacteria from small mammals, then transmit during blood meals on cats. Attachment for at least 24 hours, often 36-48, is required for spirochetes to enter the bloodstream.
Cats roaming grassy, wooded areas during tick season (spring-fall) are most vulnerable. Indoor cats face negligible risk unless ticks hitchhike inside.
Diagnosis of Lyme Disease in Cats
Veterinarians diagnose via history (outdoor exposure, tick sightings), physical exam, and tests:
- Blood analysis for antibodies or bacteria
- Urinalysis and joint fluid analysis
- Complete blood profile to rule out other issues
Symptoms overlap with other conditions, so comprehensive testing is essential. Positive tests don’t always mean active disease due to cats’ resistance.
Treatment of Lyme Disease in Cats
Treatment centers on antibiotics like doxycycline (gold standard), administered for 4 weeks outpatient unless severe. Supportive care includes:
- Rest, warmth, pain relief
- Monitoring for improvement within days
- Second course if needed
Most cats recover fully with prompt care, though joint pain may persist. Borrelia‘s immune evasion can cause relapses requiring repeat treatment.
Recovery and Management
Cats typically improve rapidly on antibiotics, but complete the full course to prevent resistance or relapse. Long-term management involves tick prevention, as bacteria may linger in tissues. Prognosis is excellent if treated early; delayed cases risk chronic issues like kidney damage.
How to Prevent Lyme Disease in Cats
Prevention focuses on tick control:
- Use vet-recommended flea/tick preventives year-round
- Daily checks: Part fur, inspect skin (ears, neck, armpits, groin)
- Remove ticks promptly with tweezers, grasping close to skin
- Keep cats indoors or leashed in tick areas
- Mow grass, avoid wooded spots
No Lyme vaccine exists for cats, unlike dogs.
Frequently Asked Questions (FAQs)
Can cats get Lyme disease from dogs?
No, Lyme isn’t directly transmitted cat-to-cat or cat-to-dog. Only infected ticks spread it.
Can you get Lyme disease from your cat?
No direct transmission from cats to humans. Cats may carry unattached ticks indoors that bite people—check pets thoroughly.
How long does it take for a cat to show Lyme symptoms?
Signs may appear 2-5 months after bite, or within 4 weeks early on.
Is Lyme disease fatal in cats?
Rarely; treated cats usually recover fully.
Do indoor cats get Lyme disease?
Very unlikely without tick exposure.
Conclusion
While Lyme disease is rare in cats, vigilance against ticks safeguards your pet and home. Consult your vet for tailored prevention in endemic regions.
References
- Lyme Disease in Cats — Small Door Veterinary. 2023. https://www.smalldoorvet.com/learning-center/medical/lyme-disease-in-cats
- Lyme Disease in Cats – Risks, Symptoms, and How to Prevent — Whisker. 2024. https://www.whisker.com/blog/lyme-disease-in-cats
- Lyme Disease in Cats: Causes, Symptoms & Treatment — Purina. 2024. https://www.purina.com/articles/cat/health/symptoms/lyme-disease-in-cats
- Lyme Disease in Cats — PetMD. 2024. https://www.petmd.com/cat/conditions/infectious-parasitic/c_ct_lyme_disease
- Lyme Disease: A Potential, But Unlikely, Problem for Cats — Cornell University College of Veterinary Medicine. 2023. https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information/feline-health-topics/lyme-disease-potential-unlikely-problem-cats
- Lyme Borreliosis in Animals — Merck Veterinary Manual. 2024. https://www.merckvetmanual.com/infectious-diseases/lyme-borreliosis/lyme-borreliosis-in-animals
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