London 2012: Two interactive drops of steel called Wenlock and Mandeville are the mascots for the next Olympics and Paralympics. But what mascots have past Games had?
Munich, Germany 1972: Waldi the dachshund dog was the first official Olympic mascot. The different colours were chosen to represent the happiness and joy of the Olympics.
Montreal, Canada 1976: Can you tell what it is? No, neither can we. We're told it's a beaver called Amik.
Moscow, Russia 1980: This is Misha the bear, who was designed by a famous Russian children's illustrator called Victor Chizhikov.
Los Angeles, USA 1984: Sam the eagle was designed by the guy behind Mickey Mouse, Walt Disney. A bald eagle is the symbol of the USA.
Seoul, South Korea 1988: Hodori the tiger's name was chosen from more than 2,000 suggestions sent in by members of the public.
Barcelona, Spain 1992: 20 years after Waldi the dachshund, along came another dog. Cobi even got his own series on Spanish TV.
Altanta, USA 1996: Izzy the... erm... No-one quite knew what the first computer generated mascot was. So they called it Izzy - short for the question on everyone's lips: What is it?
Athens, Greece 2004: Phevos (left) and Athena were based on ancient dolls believed to be the first Greek toys. They were named after Greek gods.