I want a hippopotamus for christmas

She would not really want a Hippopotamus for Christmas

I see a documentary from S.Africa where a couple adopted one, everything went fine until it tried to get on the sofa

and the bed,not much left of either.

Hippos are also very aggressive towards humans, whom they sometimes attack whether in boats or on land, commonly with no apparent provocation, and are widely considered to be one of the most dangerous large animals in Africa. Hippos mark their territory by defecation.

when attenborough is not around they are often found on deck sipping
an iced cabbage juice.

I think she would soon be wishing she had asked for a pony.