hippos produce huge amounts of waste and methane gas that can change the chemical composition of the river’s water and there are already signs of deadly algae blooms caused by their excrement in the Magdalena River. They also frequently choose violence when approached by humans, reflected in their status as the large animal that kills the most people in Africa each year.
hippo genitalia is very difficult to identify and remove and even hippo-experienced veterinarians are forced to drug the creatures and conduct invasive examinations in order to determine a hippo’s sex.
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