Sometimes, the body goes on the attack against itself. The resulting condition is known as an autoimmune disease. Labrador retrievers are among the breeds most likely to suffer from immune-mediated hemolytic anemia, or IMHA.
This occurs when a Lab’s immune system starts attacking his red blood cells.
IMHA usually strikes middle-aged Labs, with females more susceptible than males.
Your dog’s red blood cells, produced in the bone marrow, bring oxygen to the rest of his body.