Spot the difference: The famous Venus and an Organist and cupid by Titian in all its glory (left) and with natural born model Zarathustra (right)
Classic: Monet's 1886 work Haystack at Giverny is a much-loved Impressionist masterpiece is on show at The Hermitage Museum in St Petersburg, Russia
Clawed Monet: Haystack at Giverny with an extra cat in it, replacing the haystack
Purr-iceless work of art: Vodkin Spring painted by Russian artist Kuzma Petrov in 1935 (left) and improved with Svetlana's cat (right)
The Birth of Venus by Sandro Botticelli, again with Zarathustra thrust into it
Mirror image: Petrova's attention to detail, the reflection in the mirror, is the punchline to this 'masterpiece'