Key
The Opener of Locks
Dogs are under extreme selection, not genetic drift. While artificial selection may be more strict than that found in nature it is not different in kind. Humans selecting dogs for their fur color is no different than elk selecting wolves for speed.
No, the nature of the selection is a very different kind. In Artificial Selection, there can be selection based on a positive or sought after trait, as well as removal or even inclusion of negative traits (Your example of English Bull Dogs is a good one for the inclusion of negative traits)
In natural selection, there is only stress against a negative trait.
As such, the means, method and final outcome are vastly different, not just stricter levels of the same affect.
I believe this is something that should be brought to your attention regarding this, as it is a very important part of the aspect of "evolution" and it's plausibility.
Separate species are two POPULATIONS that do not interbreed. Infertility between two individuals may not indicate speciation of the larger group.
I used the word Life Forms, IE: Plural, not necessarily Populations, because the affect is both, individual and group whole. If individuals will, can, and do, breed with each other, and produce viable offspring, then it is not truly a different species, but a breed.
After all, Populations are just groups of individuals.
Size. Some dog breeds are physically incompatible.
Addressed already.
An even stranger situation is english bulldogs. They have been bred for such large heads and narrow hips that some pups can not be birthed naturally. They must be extracted by caesarian. This breed is extremely dependent on humans for their survival.
A prime example of ID .. gone wrong.. but still ID, I might even argue the level of intelligence of the designer, but, I could not decry that there is some level of intelligence there. After all, a designer does not mean the design will not be the best or without flaws, look at the Ford Pinto for a good example of that.
We can't argue that it was designed, we just know it was not a very good design.
God Bless
Key
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