Which of the following symptoms is associated with babesiosis?

Loss of appetite is associated with babesiosis as it is a common symptom exhibited by dogs infected with this disease. Babesiosis is caused by protozoan parasites that infect red blood cells, leading to various clinical signs. The presence of these parasites can cause anemia due to the destruction of red blood cells, leading to systemic effects that impact the dog's overall health, including a reduction in appetite.

While persistent vomiting and excessive thirst can be symptoms of various health issues affecting dogs, they are not specifically linked to babesiosis. Severe itching is often associated with different types of skin conditions or allergies, rather than infections like babesiosis. Understanding the specific symptoms that align with particular diseases aids in accurate diagnosis and treatment.