For a white wolf, I suggest the Tundra Biome. The wolf's fur blends in with the snow, making it unable to be seen.
The two resulting populations will evolve and adapt differently over time to the different ranges as the conditions change in both ranges.
Their color, size, lifespan, and consumption choices may change with that.
After all of this takes place, you're left with 2 new breeds/species of butterflies.
Hope I helped :)
<span>This is due to the higher forces needed to pump blood through the systemic circuit (around the body) compared to the pulmonary circuit.</span>
