Lyme disease, a prevalent illness transmitted by ticks, threatens humans and our cherished canine companions. In this comprehensive piece, we will explore the intricacies of Lyme disease in dogs, covering its origins, causes, symptoms, diagnosis, and treatment.
Moreover, we will touch upon additional ailments that can be transmitted to dogs by these tiny parasites. We aim to empower you with the understanding necessary to safeguard your beloved furry pals from this affliction and guarantee their optimal health.
Understanding Canine Lymes Disease
Lyme disease in dogs is caused by the Borrelia burgdorferi bacterium, transmitted through infected tick bites.
Ticks That Carry Lyme Disease
Different tick species spread Lyme disease in various regions:
- Northeast & Midwest: Black-Legged Tick (Ixodes scapularis)
- Pacific Coast: Western Black-Legged Tick (Ixodes pacificus)
- East, Southeast & Midwest: Lone Star Tick (Amblyomma americanum)
- Eastern U.S.: American Dog Tick (Dermacentor variabilis)
Ticks become infected as juveniles after feeding on wildlife hosts like mice and birds. Not all ticks carry Borrelia burgdorferi, but in endemic regions, over 70% of adult black-legged ticks may be infected.
How Lyme Disease Develops
When an infected tick bites a dog, it takes 24-48 hours for the bacteria to transfer. The bacteria move from the tick’s gut to its salivary glands, then enter the dog’s bloodstream. This can lead to localized or systemic infections affecting multiple organs.
Symptoms of Lyme Disease in Dogs
Many infected dogs show no symptoms, but 5-10% may develop signs 2-5 months post-infection.
Common Symptoms:
- Lameness: Often the first sign, affecting one or multiple joints, recurring in different legs.
- Swollen, painful joints: Stiff gait, reluctance to move, play, or exercise.
- Fever: Elevated temperature, often unnoticed without a thermometer.
- Swollen lymph nodes: Particularly near the bite site.
- Loss of appetite & lethargy: Reduced energy and interest in food.
- Kidney damage (rare but serious): Vomiting, diarrhea, weight loss, increased thirst/urination, and fluid buildup.
Less Common Symptoms:
- Heart abnormalities
- Nervous system issues
- Shifting-leg lameness
When to See a Vet
If your dog shows any of these symptoms and has been in a tick-prone area, seek veterinary care immediately. Early detection and treatment can prevent serious complications.
Treatment for Lyme Disease in Dogs
Lyme disease in dogs is typically treated with antibiotics, most commonly doxycycline or minocycline, given for 4 to 6 weeks. The exact duration depends on the severity of the infection and the dog’s response to treatment.
Antibiotic Treatment
These antibiotics work by stopping bacterial growth, allowing the immune system to clear the infection. However, Lyme disease may not always be completely eliminated, as bacteria can remain dormant and cause future flare-ups. Close monitoring after treatment is essential.
Severe Cases: Additional Treatment
For dogs with more serious Lyme disease symptoms, additional supportive care may be required:
- IV fluids – For dehydration and kidney support
- Pain relief – NSAIDs or steroids for joint pain and inflammation (must be used under veterinary supervision)
- Dietary adjustments – If kidney damage is present
Follow-Up Care
After treatment, regular vet check-ups are important to monitor for relapses. Your vet may recommend blood tests to track antibody levels and ensure recovery.
Dogs Can Be Vaccinated for Lyme Diseases
Vaccination against Lyme disease is available for dogs and can be an additional tool in preventing this disease.

However, it’s important to note that vaccination may not always be 100% effective and should not replace other preventative measures such as regular tick checks and the use of tick preventatives.
Conclusion
In conclusion, while ticks are small creatures, they can carry a variety of diseases that can affect your dog’s health. Therefore, taking preventative measures against ticks is crucial to protect your dog from these potential diseases.
Lyme disease is preventable if you get your dog vaccinated. Affected dogs can be treated, but the process can take a while to fully rid Lyme disease from your dog's system, so be tick-aware!