MARGARET It seems to me that the various types of wolves, dogs and doglike animals offer a perfect example of evolution. I think that most scientists would recognize dogs, woves and coyotes as separate species, for example. But their similarity suggests that they have a common ancestor. Creationists, on the other hand, have to argue that there is some barrier that prevents one type (i.e. kind) from turning into another. Of course they never define what a "kind" is exactly. Selective breeding has increased the variety of dogs. But what about the wolf to dog transition? Isn't this evolution? And if not, why not? What about coyotes and foxes? Do foxes and wolves have a common ancestor even though they are definitely two distinct species? In the dog world, where exactly would a creationist draw the impassable boundary?