P ronghorn antelopes are the fastest land animals in North America, clocking speeds of up to 55 miles per hour for a half mile, and 45 miles per hour for longer. Since they mostly run in response to ...
CAPE TOWN, South Africa — For 35 years, American zoologist Laurie Marker has been collecting and storing specimens in a cheetah sperm bank in Namibia, hoping conservationists never have to use them.
American pronghorns evolved speed millions of years before cheetahs, helping movement and survival in changing landscapes.
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A sperm bank for cheetahs could one day save the world's fastest land animal from extinction
For 35 years, American zoologist Laurie Marker has been collecting and storing specimens in a cheetah sperm bank in Namibia, hoping conservationists never have to use them. But she worries that the ...
These giant felines are the world's fastest land animals. Here's why.
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