Why are Hedgehogs illegal in some places?

Canada
@breepeace (3031)
June 29, 2007 6:53pm CST
Does anyone know why keeping hedgies is illegal in some states, provinces and municipalities? I see that it's illegal to keep a hedgehog as a pet in New York City, California and Pennsylvania. I also saw the it's illegal to own GERBILS in California! Why is that???