A lot of things will lie to you in your life, but not poop. Close examination of animal scat will help you identify not only the species but how recently the animal was there, its sex, what it ate, ...
River otter poop is the perfect for Katrina Lohan's research as it contains DNA from worms, fish, and other organisms, including parasites. Image: National Zoo River otters are unequivocally cute. But ...
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