The man who saved Bulgaria's dancing bears

Video duration 3:52

The retirement home for dancing bears Saving the Bulgarian bears who were chained, tortured and forced to dance.

Video duration 4:07

The deaf protest that gripped America In 1988 deaf students barricaded a deaf-only university in protest against the appointment of a new hearing president.

Video duration 4:20

When the world sang with whales The curious sounds from the ocean discovered by Dr Roger Payne that led to a global hit

Video duration 4:09

The dog that orbited the Earth The first living creature to be sent into orbit around the Earth was a Soviet stray dog called Laika. She was a pioneer of the space race.

Video duration 5:08

Pickles: Dog that found stolen World Cup The story of the dog that saved England's blushes by finding the 1966 World Cup trophy after it was stolen from an exhibition in central London.