Green Pup and Placenta
He further explained that the blood which escapes the main placenta is broken down in the uterus to biliverdin, which would turn the hair of a puppy green if this pigment invades into the amnionic sac as it surrounds them.
Therefore, the placentation of this puppy must have been abnormal if it did not repel the biliverdin and allowed it to invade in. It is also interesting that only one puppy managed to gain the beautiful, green color on its hair.
