Summary A poodle female dog presented clinical and haematological signs compatible with an illness produced by Rickettsia, at the same time a big size mass was found in the mammary gland. After the diagnostic tastes, a big tumour was also found in the liver being compatible with haemangioma. After the euthanasia was done to the patient and histhopathological studies were done, a cavernous haemangioma was diagnosed, a mixed malignant mammary tumour and a process compatible with leukaemia.
