What the hell are you talking about? If you are going to change the form of an animal, there has to be a change or mutation early in the formation of that animal while the body plan is being formed. And when that occurs, it is always fatal.
False assumption. Certainly there are some mutations that can be fatal...absolutely.
But how is it you don't notice obvious mutations in existing living animals?
If someone has a mutation that causes them not go grow lungs; that's fatal. If someone has a mutation that caused them to have 6 fingers...Not fatal.
