Most Common Predator on the Pleistocene Mammoth Steppe of Eurasia(Post Flood)

The first generation of animals born after Noah's Great Flood were on average 20% Larger than their modern counterparts and probably lived twice as long on account of the higher levels of Oxygen and Carbon Dioxide in the Atmosphere caused by the Luxuriant Pantropical plant growth and giant trees of the 1st Pre-flood world combined with higher atmospheric pressures which gradually dissipated within a 500 -1,000 years post flood. Causing decreasing fitness and robustness of the animal and plant kingdoms with localized extinction events resulting from harsher conditions droughts and and a rapidly deteriorating climate especially in the upper latitudes of the Northern Hemisphere. The magnetic field of the Earth itself was also most certainly stronger.