Leukemia is able to affect dogs.
Distichia . This abnormality , attributed to a genetic mutation , is known to affect dogs and humans . Leukemia , also spelled leukaemia , is a group of cancers that usually begin in the bone marrow and result in high numbers of abnormal white blood cells . It is the most common type of cancer in children , with three quarters of leukemia cases in children being the acute lymphoblastic type .