What makes this Fluffy Bunny so darn fluffy?

Perhaps it's an adaptation to a colder climate?

Taking on-and-off a winter jacket during day-trips from the warren would be tiresome indeed! Or is there some other special secret purpose to this fantastical fleece? Could this bunny's fluffiness be the product of a well-oiled morning routine, complete with the finest designer creams and potions to make that fluff fiercely fabulous? Only the Squishable Fluffy Bunny knows the truth to the question of whether they're born with it, or if it's salon-quality supreme!