Time-critical
Tick fever in dogs
PetPort EditorialLast reviewed
What is tick fever in dogs, and what are the first signs?
Tick fever is a group of blood infections passed on by the brown dog tick — most often ehrlichiosis or babesiosis. It usually begins as fever, tiredness and a lost appetite, and can progress to pale gums, nosebleeds or pinpoint bruising. It needs a blood test and a specific prescribed course, not a general antibiotic.
General guidance for pet parents, not a diagnosis. Every animal is different — confirm anything that concerns you with your veterinarian.
Quick reference
| Carried by | The brown dog tick, which lives in Indian homes and kennels year-round |
|---|---|
| Common forms | Ehrlichiosis, babesiosis, anaplasmosis |
| Incubation | Roughly 1 to 3 weeks after the bite |
| Diagnosed by | Blood smear, a rapid in-clinic test or PCR — your vet chooses |
| Treatment | A specific course your vet prescribes after testing, often for several weeks |
| Chronic phase | Can suppress the bone marrow months later, and is far harder to treat |
| Reinfection | Common — recovery gives no lasting protection |
| Prevented by | Year-round tick control, plus treating the environment |
What is happening
Several different organisms travel in the same tick, and they behave differently. Some attack red blood cells, causing anaemia and dark urine. Others attack white cells and, over months, the bone marrow itself. A dog can look recovered between phases while the infection is still present — which is why the blood test matters more than how well the dog seems.
Signs to watch for
- Fever, dullness and going off food, often the only early signs
- Pale or white gums instead of healthy pink
- Nosebleeds, or pinpoint red spots on the gums or belly
- Dark or coffee-coloured urine
- Swollen glands, weight loss, or a dog that never quite picks up after a tick season
What you can do
- Ask for a blood test — the picture overlaps too many other illnesses to guess
- Remove ticks with a tick tool, gripping close to the skin, without burning or twisting
- Treat the house, not only the dog, and repeat as your vet directs
- Finish the whole course even after your dog looks well again
See a vet if
Same day for pale gums, any bleeding, dark urine or collapse — those mean red cells or platelets are already low. Within a day or two for an unexplained fever or lethargy after tick exposure.
In India specifically
Tick fever is among the most common serious illnesses Indian vets see in dogs, and the brown dog tick is unusually well suited to Indian homes — it lives indoors in cracks and bedding and breeds year-round rather than seasonally. That is why a dog treated in isolation is often reinfected within weeks: the tick population is in the building, not on the animal. Clinics here see the chronic bone-marrow form regularly, usually in dogs whose acute phase was treated as a passing fever and never tested.
Common questions
My dog has a fever but I have never seen a tick. Can it still be tick fever?
Yes. A tick needs only a few hours attached, and a single one is easily missed between the toes, inside an ear or under a collar. Ticks also drop off once they have fed. Not finding a tick does not rule it out — the blood test does.
Why do the ticks keep coming back after treatment?
Because most of them are not on your dog. The brown dog tick lives in cracks, skirting, bedding and kennel walls, and climbs on only to feed. Treating the dog alone leaves the population intact, so it rebuilds within weeks. The environment has to be treated as well.
Is tick fever contagious to other dogs, or to people?
Not directly dog to dog — it needs the tick. But an infested house means every dog there is exposed. Some tick-borne organisms can affect people too, so mention it to your doctor if anyone in the household is unwell after a heavy infestation.
My dog seemed to recover on his own. Do we still need treatment?
Yes, and this is the trap with tick fever. Some forms go quiet for months while the infection persists, then return as a far more serious bone-marrow disease that is much harder to treat. Feeling better is not the same as being clear — the blood test decides.
When is tick season in India?
In much of India there is no off-season. The brown dog tick completes its entire life cycle indoors, so warm humid months raise the risk without creating it. Year-round prevention makes more sense here than the seasonal approach used in colder countries.