>Biliverdin is green in color and can give the urine a green color.
Biliverdin is usually converted to bilirubin.  Bilirubin is yellow in
color.  High bilirubin will cause jaundice (yellow color to skin,
eyes,etc.).  As Dr Williams pointed out, destruction of red blood cells
can also cause increased biliverdin and a green color to the urine along
with some other possible causes.
 
Jerry Murray, DVM
 
At necropsy, an animal in liver failure can also have green discoloration
of the kidney tissue as well ("cholemic nephrosis") and in really bad
cases, the liver is green too.
 
With kindest regards,
Bruce H. Williams, DVM, DACVP
 
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[Posted in FML issue 3411]