Canine ehrlichiosis is a disease caused by the bacteria Ehrlichia that infects dogs, primarily transmitted through bites from infected ticks. This illness can lead to symptoms such as fever, lethargy, and loss of appetite. If left untreated, it can cause serious health issues, including damage to the immune system and blood cells. Diagnosis typically involves blood tests to detect the presence of the bacteria. Treatment usually includes antibiotics, which can help manage the infection. Preventive measures, such as using tick prevention products and regular check-ups, are essential to protect dogs from this disease.