Polar bears and grizzly bears can't reproduce together**, but I remember you telling me that all bears are part of the same "kind". The definition of a species is a group of organisms that can reproduce with one another.
**Edit:
I checked it on Google and I happened to pick the two species that, on rare occasions, have mated. But that doesn't invalidate my point. The grizzly and the polar bear are both from the same genus, Ursus, so the fact that they would have compatible gametes isn't that surprising. But a polar bear and a panda bear could not reproduce, even though they are both bears. Baraminology would not be able to account for this inconsistency.









That's a good question that I haven't researched but I imagine if the different kinds can't reproduce together then that would be a good sign that they are different kinds and not related except by the same Designer.