In older dogs and cats,, lymphocytic leukemia, lymphoma, pure red cell aplasia in cats (probably an autoimmune disease of the bone marrow), immune - mediated hemolytic anemia, thymoma tumors, (2ndchance.info)
Congenital Defects in Northern Elephant Seals Stranded Along the Central California Coast - Journal of Wildlife Diseases, 33 (2), 1997 Persistent Right Aortic Arch and Cribiform Plate Aplasia in a Northern Elephant Seal (Mirounga angustirostris)- Journal of Wildlife Diseases, 44 (2), 2008 (marinemammalcenter.org)
Fawcett A., Phillips A., Sullivan N. and Allen G. (2009) Segmental uterine aplasia with ipsilateral renal agenesis in a mixed breed cat. (smallanimaltalk.com)