Had to post b/c this is driving me nuts. This is *not* a baby hippo! It is a hairless guinea pig. Even the page I pulled it from says so, "Looks like a micro-mini hippo! It's a hairless Guinea pig." (notice the "looks like").
Baby hippo needs a little underwater nudge from mama. Baby hippos are born underwater at a weight between 25 and 45 kg lb) and an average length of around 127 cm in) and must swim to the surface to take their first breath.