There would be none in terms of fossils etc. it is after the flood.
Fossils can and do develop outside of flood conditions. Tar pits, as an example.
But a point to note is we do see big cats and canines in tundra regions.
So? Big cats and dogs are found all over the world. Besides, you're not just talking about cats and dogs, but all predators. There's no evidence of any massive northern migration of animals.
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