According to Dr. Laura Robinson, DVM, the main tick-borne diseases in dogs are Lyme disease, Ehrlichiosis, Anaplasmosis, Rocky Mountain Spotted Fever, and Babesiosis. Most of these are tick diseases that attack different parts of the body, such as blood cells.
Fleas typically don’t transmit as many diseases as ticks. If fleas have infested, your dog will exhibit scratching and itching, usually around their tail base. Sometimes you can see evidence of flea dirt.
Ticks can be very difficult to see — especially if your dog has a lot of fur. Symptoms will normally start to appear around three months after being bitten, which include poor appetite, limping, fever, anemia, pale gums, and bruising.
If you suspect your dog has fleas or ticks, take to them to your vet as soon as possible.