What is one of the acute signs of Canine Ehrlichiosis?

Acute signs of Canine Ehrlichiosis, particularly the bleeding tendencies, arise due to the infection caused by the bacteria Ehrlichia canis, which affects the platelets and can lead to a low platelet count (thrombocytopenia). This condition makes it difficult for blood to clot properly, resulting in various bleeding issues. Pets may exhibit symptoms such as bruising, nosebleeds, or other types of hemorrhage.

The other options reflect conditions or behaviors that do not align with the expected clinical signs of this disease. For example, increased appetite and weight gain are generally indicators of other health conditions or simply normal physiological variations, while normal energy levels would be atypical in the infected canine, as lethargy or decreased energy is typically observed in those suffering from this illness. The presence of bleeding tendencies is thus a significant and acute indicator of Canine Ehrlichiosis that warrants attention and concern.