At first glance, they can look pretty similar. Both provide meat, bone, and organs—but they're actually made in two very different ways.
Whole Grinds are exactly what they sound like: the whole animal (with very few removals) is ground to preserve the natural variety nature intended.
PMR grinds, on the other hand, are carefully formulated recipes designed to mimic a prey animal using specific proportions of meat, bone, and organs.