Eddie the otter playing basketball
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Eddie the arthritic otter shoots hoops

21 February 2013 Last updated at 08:02 GMT

Eddie the otter suffers from arthritis, so his keeper has come up with a novel way for him to improve movement in his joints - basketball.

But visitors to Oregon Zoo, where he lives, will not be able to see him doing it - he only does it in the privacy of his training pool.

Louise Minchin and Charlie Stayt explain.

Pictures courtesy Oregon Zoo.