Hippos

saying get away
Source: http://rawstylus.wordpress.com

baby
Source: http://www.bakegreek.com/tag/hippo/

helping baby swim
Source: http://www.flickr.com/photos/nagunak/54749368/

swimming
Source: http://www.pollsb.com/polls/hippo
 Baby hippos can weigh 100 pounds and they let other hippos babysit their babies for them.  They spend up to 16 hours in water.  Hippos may not look like it but they are actually very dangerous.