How street cat named Bob saved busker
30 June 2013 Last updated at 10:42 BST
Busker James Bowen was homeless when a ginger tomcat walked into his life.
Since then his book about the unlikely friendship, A Street Cat Named Bob, has sold over 700,000 copies, and been translated into over 20 languages.
James and Bob joined Jeremy Vine on the BBC's Andrew Marr Show.
Watch the Andrew Marr Show on the BBC iPlayer.