Bison and Moose clearly can't graze on developed pine/fir trees which is why the subarctic has been reforesting for 10,000 years and there's basically no subarc

Bison and Moose clearly can't graze on developed pine/fir trees which is why the subarctic has been reforesting for 10,000 years and there's basically no subarctic steppe/grassland [1] left (after the mammoths died). [1] https://en.wikipedia.org/wiki/Mammoth_steppe https://en.wikipedia.org/wiki/Mammoth_steppe