Walrus Fitness Fanatic
As I was trudging into work this morning, half-asleep as usual, I was greeted by the bizarre sight on the large tv in reception of a walrus working out by doing sit ups with it's keeper. Found the details and clip (judging by the search results on Google virtually every TV station in the U.K ran it !) later - it's a walrus called Seahook at San Diego Zoo (who are running a keep-fit drive for their animals - well done guys !) :

The full clip is here (hope this works) : http://news.bbc.co.uk/media/avdb/news/video/73000/bb/73281_16x9_bb.asx
The scenes with Seahook are absolutely hilarious, and the rest of the animals in the clip are cute as anything (manatees are always cute !).