For example, in the ferret ("Mustela putorius furo"), it is caused by estrogen toxicity, because female ferrets are induced ovulators, so mating is required to bring the female out of heat.
For example, in the ferret ("Mustela putorius furo") aplastic anemia is caused by estrogen toxicity. This is because female ferrets are induced ovulators, so mating is required to bring the female out of heat.