Whales, dolphins, and maybe a platypus.
i know that they cannot hold the breath for long time. i guess is around 19-25 minutes Additional Info: A mature Hippo normally will hold their breath for an average of 5 minutes. But when forced, or pushed a mature Hippo can hold their breath for as much as 30 minutes, researchers believe it could be longer, but have no proof.They can stay underwater on one breath for 30 minutes at a time.hippos can stay under water for fifteen minutes they can close their nostrils they are fast swimmers but slow at walking on land
The hippopotamus is a mammal and uses its lungs to breathe. Because its nostrils are located on top, it can still breathe while remaining mostly underwater. When fully submerged, the hippopotamus can hold its breath for a maximum of five minutes.
Yes. A hippo is a mammal.
It doesn't. Hippos have lungs, just like you and I. If they want to dive, they have to hold their breath. Or they'll choke and drown.
Mammal
A vertebrate as it has a backbone.
with its nose
Yes, it's a mammal.
hippo's give birth underwater not on land
Hippo
hippopotamus (hippo)
"A hippo sleeping underwater rises and breathes without waking" says Wikipedia