One well known cause of autoimmune hemolytic anemia are vaccines.  Was the dog 
vaccinated recently?  I don't have any suggestions for treatment only the 
cause.  Sorry...

Barbara 

PS.  You can google the <vaccines autoimmune hemolytic anemia> and you will 
find lots of entries.



    I don't know the cause... he doesn't have cancer or anything anyone can 
point to as the cause... is this possibly a virus or a chemical exposure of 
some sort?  Some have said a tick bite can do it ... titer for that proved 
negative. 

  Bob Banever