I also want to add that I sold a pup to a vet tech once that nearly died because the vet's x-ray machine became defective and unknown to her it was leaking radiation. She started becoming very very ill and after about a week they found out she had radiation poisoning. She lived but the damage that was done was irreversible. Below is a article about x-ray dangers pertaining to humans.
http://www.time.com/time/magazine/ar...862407,00.html