Yes, Africa does have its own LARGE fauna but nothing compared to what roamed this continent during the evolutionary history of rattlesnakes. And also to my knowledge from my interests in paleontology no one has found any "mega fauna" mammals in africa. You compare an African bull elephant to a bull Woolly Mammoth or a bull Columbian Mastodon and the African bull will look small. As far as hooved mammals they can gain access to remote places that rattlesnakes are at. Look at the mountain goat, pronghorn sheep. Now here is a whole other topic-Where did rattlesnakes originate on this continent? Some species of rattlesnakes have a large population range and may cover from the plains upto some of the highest elevations in the rockies or from forest floors and valleys upto the appalachians. And I know some species ranges overlap each others. And yes I know this continent has gone through some major changes in the last 2-3 million yrs(as far as rattlesnakes linneage goes back, to my knowledge)and animals have come and gone. And during glaciations most of the land and high elevations were locked under ice thus less land to disperse causing a sort of over-crowding. Africa never was glaciated and therefore never became too cold like it did here. And really it wasn't an artic freeze here during glaciation it was just cooler with drier conditions from the cold air coming down off the glaciers. I better quit before I go too deep into this, LOL.
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"I am all that is Divine, I am all that is Evil.

I am the one who brings forth Death,

On the wings of a Weevil." JSKII

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