The pronghorn may be fleet-footed (it is the fastest land mammal in the world - able to sprint 60 mph and sustain 30 mph for miles), but for some reason the species chooses not to soar over fences. I'm told they physiologically could do it, they just don't. Instead, they line up and crawl under.
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Remember Karin Kiefer? She studied pronghorn in NM for a while. I'll have to ask her if she knows why this is.
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