LOL, that's still nothing like beetles and beavers having a common ancestor.

But your choice of example does remind me of one thing. I seem to recall that Darwin was partly inspired by a pigeon breeder. The breeder produced really weird looking birds. He reasoned that, if interbreeding can produce such variety in a short period of time, then given enough time, nature could produce the variety of various species.

The funny thing is that isn't what the pigeon breeder proved at all. What he proved is that, given an intelligent outside force (the breeder), you can produce a great deal of variety very quickly.

Like I said, anyone can interpret evidence to support their assumptions.