I couldn't agree more heartsearcher, but in responce to the picture posted by bopeep, the fleas can prove that the dog is ther by doing the DNA tests on where they live and can therefore conclude that it is indeed a dog. So a pretty poor analogy there.
It may say in the bible that atheists are idiots, but I imagine in the Quran it could suggest Christians are idiots. Please show me a testable, observable difference between the two.