Dawkins poses that genetic outliers, mutations outside the edge of the mainstream of any particular species, are responsible for the very many differences we see in plants and creatures. So it is the creature with the freakish deformity whose contribution to the gene pool creates a change in the species. Add 100,000 freaks and you end up with an orca who was once a wolf (they teach this with serious countenance).
Problem is, nature rewards stability, not instability. Genetic outliers either die due to design flaws, or are not invited to prom night when it is time to reproduce.
But they are far from "freaks" when, for example, a creature perfectly adapted to a hot wet climate finds itself living in the cold & dry.
Soon "freaks" with thicker hair and better water storage survive more than the old models.
As for prom night, the cool kids with short hair will be shivering to much for romance, right?
So which is the "freak" now?
However given the proper habitat, the outliers persist
Your thoughts are static and do not allow for change