Thrombocytopenia in Dogs. Thrombocytopenia is a medical condition where blood platelets become too low in animals. Platelets are produced in the bone marrow and then released into the blood stream. They also serve the important function of maintaining hemostasis. Low platelet counts can be found in any breed of dog, and at any age.
https://www.petmd.com/dog/conditions/cardiovascular/c_multi_thrombocytopenia