Freak Felids - A Discussion of History's Largest Felines

[GrizzlyClaws]

For the same reason that they didn't colonize China was because the local native species like tiger had already seized the dominant position in the ecosystem.

Here goes for the Pleistocene North America, since the southern area was unaffected by the ice sheets, hence the lush vegetation was allowed to grow large number to sustain those mega herbivores.

In order to maintain the large size, Panthera spelaea must seize the entire unfrozen area, but they also failed to achieve the objective because of the already dominant position of its Panthera (fossilis) atrox cousin.

And I guess they might have encountered Panthera atrox in that narrow corridor on the western side, hence they probably got blocked by Panthera atrox.

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