THE BLUFFER'S GUIDE Multiple births

NATIONAL Multiple Births Awareness Day fell earlier this week - marking the 1934 birthday of Canada's identical Dionne quintuplets, the first set to survive to adulthood. Here we give you some facts on magical multiple siblings...

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HAVING trouble telling identical twins apart? Just ask your dog. In a 2011 study, boffins from the Czech Republic found trained German shepherds could sniff out the differ-ence between duos, even if they lived in the same household and ate the same food.

If you haven't got a dog, there are still a few tricks you can use to distinguish between doubles. You can ask for a look at their belly buttons - they often heal differ-ently after birth. And if all else fails, remember their finger-prints will still be unique.