Bring forth with thee every living thing that is with thee,
of all flesh, both of fowl, and of cattle,
and of every creeping thing that creepeth upon the earth;
that they may breed abundantly in the earth, and be fruitful, and multiply upon the earth.
Genesis 8:17
"Under the sand dunes of Saudi Arabia, archaeologists are unearthing evidence of a former rich green environment. Researchers have found evidence of stone tools and the 7.4-foot- long straight tusk of a giant elephant “remarkably preserved and 
Its owner was Palaeoloxodon, which at 6–7 tons was much bigger than living elephants and most mammoths, although smaller than the Columbian mammoth. Other remains included an extinct jaguar, oryx and a “member of the horse family”.
Although they would not describe their finds in such terms, the researchers have actually uncovered a legacy of a time that most likely existed for some centuries after Noah’s Flood.
Many of the places that are now deserts would have been green and lush, still ‘waterlogged’ from the Flood, and still enjoying high rainfall due to high evaporation from warm post-Flood seas. (The seas were still warm due to volcanic activity associated with the breaking open of “the fountains of the deep” during the Flood.)
Although only some animals can survive in deserts now due to the hot dry climate, in the lush conditions of the first millennium or so after the Flood it is logical that all kinds of creatures could have thrived there." CMI
