When you think of a pregnancy test, you might picture something small, plastic and available at a corner drug store. And that does work, surprisingly, for some animals at the Memphis Zoo. But, for others, zookeepers use methods that are more time-consuming, more laborious and much smellier.
To help animals reproduce — and species thrive — staffers at the Memphis Zoo study poop, freeze sperm at -196 degrees, and even help endangered species reproduce long after their deaths.
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