Primary ciliary dyskinesia
Primary ciliary dyskinesia is a disorder causing dysfunction of cilia. In dogs this manifests as sperm immotility and respiratory disease. Signs include nasal discharge, recurring pneumonia, and infertility. Symptoms develop soon after birth.

Salmon poisoning disease
Salmon poisoning disease is a fatal disease of dogs caused by infection with a type of rickettsia, either Neorickettsia helminthoeca or Neorickettsia elokominica. It results from eating raw salmon and is found in the Pacific Northwest.

Shar Pei fever
Shar Pei fever is a condition seen in Shar Peis characterized by recurring fever and swelling of the hocks. Shar Pei fever can result in renal and liver failure through accumulation of amyloid in those organs (amyloidosis).

Systemic lupus erythematosus (SLE)
Systemic lupus erythematosus (SLE) is a disease of the immune system characterized by the presence of antibodies to nucleic acid and/or antibodies to red blood cells, platelets, lymphocytes, clotting factors, and thyroglobulin. The disease can result in deposition of immune complexes or autoimmune disease. Immune complex deposition can cause vasculitis, meningitis, neuritis, and joint and skin disease. Autoimmune disease may result in hemolytic anemia or thrombocytopenia, which are the most common manifestations of SLE in dogs.

Tetanus
Tetanus is a disease caused by the bacteria Clostridium tetani following wound contamination. Dogs are not very susceptible to tetanus. Signs include difficulty opening the mouth and eating, contraction of the facial muscles, and rigid extension of the limbs. Dogs may also get localized tetanus, signs of which include stiffness of a limb spreading to the rest of the body.

Tracheal collapse
Tracheal collapse is a condition characterized by incomplete formation or weakening of the cartilagenous rings of the trachea. It is most common in small and toy breeds. Signs include a cough (often called a "goose honk cough" due to its sound), especially when excited.

Vertigo
Vertigo, better known as vestibular disease in dogs, is an uncommon condition in older dogs. Most cases are idiopathic, but it can also be caused by otitis interna, or inner ear infection, tumors, and encephalitis. Signs include nystagmus, head tilt, circling, vomiting, and falling to one side. Idiopathic vestibular disease will usually resolve in a few days to a few weeks