What is your diagnosis? Hematology and blood smear of a dog

An 8-year-old spayed female smooth-haired Dachshund with a travel history to Italy was referred to the Clinic for Small Animal Internal Medicine at the Vetsuisse Faculty, University of Zurich, with severe anemia.Clinical examination revealed dehydration of 5%, heart rate of 160 beats/min with a bounding pulse of the same frequency, systolic heart murmur grade 2-3/6, respiratory rate of 36 breaths/minute, and rectal body temperature of 37.4°C.An abdominal ultrasound showed severe colopathy, generalized hepatopathy, hepatomegaly, moderate peritoneal effusion, gastropathy, a mildly thickened gallbladder wall, and single portal lymphadenomegaly.At presentation to our clnic, we performed a hematologic analysis on a Sysmex XN-1000 (Sysmex Corporation, Kobe, Japan).The CBC revealed severe regenerative anemia, severe thrombocytopenia, and an inflammatory leukogram with possible stress leukogram (Table 1).