What will you get when you cross a Lion with Tiger?

The three rare ligers have been keeping their tiger mother Zita and lion father Sam on their toes at the Novosibirsk Zoo in southern Russia. The female cubs were all born a month ago but have just taken their first steps outside. The tiny trio are all on a diet of their mother's milk at the moment but will tuck in to up to 100lb of meat in one sitting when they are fully grown.