After the Tsunami, a baby hippo had to be put in a cage with a 100-150 year old tortoise. The hippo gravitated towards the tortoise but the tortoise hissed at it. After while, the hippo and the tortoise have become good friends. Hippo thinks that the tortoise is its mother.
It really makes the old saying about the hippo and tortoise surviving a tsunami and growing to love each other more true.