The hippopotamus is a surprisingly mysterious beast. Although it's the third largest land mammal, can run a spritely 30 km/h (19 mph) over short distances, and is far more dangerous to humans than a grizzly bear, we know relatively little about its s
"During the day they gather in groups in the water. Hippo groups are socially structured around a dominant male, a variable number of females and their young, and some peripheral males. However, it is unclear whether individuals in a pod form a stable group defending a territory or pods are organized in a fission-fusion manner with individuals moving from one pod to another."
The team found that the behavioral responses such as calling back, approaching the sound, or marking their territory by spraying poop occurred in response to all three of the sounds – but strangers incurred much higher levels of pooping."Whereas individuals responded to calls from any group, marking behavior is modulated by the category of the calls,"
Secondly, this also suggests that hippos are less aggressive to their neighbors than they are to strangers. This doesn't always work this way, as some territorial animals will beFinally, this also might provide a way to help conservation efforts when moving hippos around.
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