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It sounds like painful work though: you play the game by linking Tupsu's waggly eyes to floating islands in order to propel him around the screen collecting stars.

In the Islamic Republic, where dogs are seen as 'unclean', a motion to ban the waggly tailed ones from public places has been put forward.

Mother used to offer us sixpence a tooth when they grew waggly, and we pulled them out without any fuss.

"Little waggly things you see with microscopes," said Cyril, with a scientific air.