Of course. There is a world of difference between development and interspeciation. A better example is a virus, which will do more reproduction and genetic recombination is a decade than human beings could accomplish in a millenium. Yet it will remain a virus. It will change itself and adapt to its circumstances, but it will remain a virus.
I think one reason so many people are hell-bent on supporting "evolution" is that we haven't got a universal definition of what "evolution" actually is! Is it a horse getting taller, or antibiotic resistance, or is it a fish becoming a frog? For me, any decent theory about evolution must include something about interspeciation.
Evolution is defined as the changing over time of allele frequencies in the gene pool of organisms. Indivdual organisms do not evolve. Populations of organisms do. When a subgroup of the population becomes isolated from the rest of the population and evolves to the point where its members can no longer interbreed with the members of the main population, speciation has occurred. After many such speciation events occurring from within both the subpopulation and the remainder of the population, it is reasonable that the descendants of these two groups will eventually become very different.