The question is often asked: Why are the wolves and other creatures now living in and around Chernobyl not affected by the radio active contaminated environment?
The most simple explanation is that at first the heavy fallout affected the animals that was already in the area. Many died quickly. Chernobyl was evacuated when the dosage of radio activity reached 350 mSv/lifetime. It is dangerous to human health but not deadly in the short term. Some areas were even less affected. After time the running river water became as clean as any river and is abundant with fish. The fish however are contaminated.
As time went by more animals moved in. Like the wolves. They are as much affected by the radio active contaminated environment as humans are. The difference is that most animals have a very short lifespan in comparison to humans. Wolves live an average of six to eight years before it dies a natural death, either by being killed or just from hunger.
The same goes for deer. The effects of radio activity at the current levels in Chernobyl and surrounding areas is relatively slow when compared with the maximum lifespan of most mammals living in the area. Wolves also move around and may not always be in the heavily contaminated areas all the time.
It would have been disastrous for humans to stay there over long periods of time but wolves and most other creatures don't live long enough for the effects to manifest in death.
By Vincent Kennard.