What animal is known for their large mouths and large sturdy bodies and a fairly good swimmer? This hippo! While hippopotami (or hippopotamuses, your pick!) may seem like innocent creatures, hippos are actually pretty intense. Did you know a hippo can outrun a human being? The Hippo is now Kawaii-fied (That's a word right?) into the ultimate snuggly kigurumi version and available for wearing everyday! Did you know they are one of the most aggressive and unpredictable animals ever? Wow, hippos are so cool.