The British pop star`s pet bunny had to undergo a potentially life-threatening operation and Kate - who admits she suffers from obsessive compulsive disorder (OCD) - convinced herself if she stopped eating meat her floppy-eared friend would survive.
She told Seven magazine: "I became a vegetarian last September - I used to suffer from OCD and it got stuck in my head that if I didn`t eat meat then my bunny rabbit, Fluffy, would survive a dangerous operation she had to have."
Although she is now a vegetarian, Nash admits she loves the taste of meat and thinks she will eat it again at some point.
She added: "I do love the taste of meat and definitely want to have a cheeseburger again before I die."
The `Kiss That Grrrl` singer also revealed she believes she could survive a zombie apocalypse.
The singer - who is dating The Cribs frontman Ryan Jarman - has devised a strategy to avoid being eaten by the slow-moving monsters should the dead ever rise from their graves.
She said: "I like horror films, zombie ones in particular. I have a foolproof survival plan thought out should zombies invade."