system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are hippos so dangerous?

I was recently told that they kill a disproportionate number of people - and from what I understand, they are herbivores. Why are they so dangerous?
E: wow you all know quite a bit about hippos! thanks!
gpt
They weigh in excess of 5,000lbs, so they are more powerful than you think.

They can swim 30mph and run 20mph, which is incredibly fast for their size. You will probably get closer than you should because you have a false sense of security, thinking "I can outrun that thing."

Their front teeth can reach nearly 15" in length, so they are essentially small swords, and they can open their mouths wider than just about any other animal.

Their skin is several inches thick, so most guns won't even penetrate it. The gun you are carrying for protection is most likely not strong enough to hurt them unless you hit the soft spots (eyes, belly).

They are extremely aggressive and territorial. Because of their shape and stature, the best method of defending themselves is attacking.

TL;DR You have a 5,000+lb animal with bulletproof skin and swords for teeth that can out run and out swim you.