You guys always use that argument, and there was a time when there were both types of species before the weaker one died.

We're in a transition period, that's all.


IN other words.
The Black mouse is better than the White Mouse. The White mouse and the Black Mouse continue to live together, side by side, while the Black Mouse furthers it's evoluationary path and the White Mouse is stuck on it's current course. Until finally, after an unspecified amount of time, the White Mouse dies.

Just because they lived together at the same time doesn't mean the Black mouse didn't evolve.

Evolution doesnt mean something dies the instant another more advanced form is put into circulation. It could mean something as simple as a warmer fur coat for winter, for an animal, over it's previous generation. Then, over the course of time that animal has less cold-related deaths and eventually the one with the weak fur dies.

It's not an instant thing.
And if you look. Monkey's populations *are* dwindling.