These animals are really cute… but they also have some surprises in stock for us! For example, did you know the three-toed sloth can turn its head 270 degrees? Test your knowledge against our list - you might learn a thing or two!
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As we prepare for Earth Hour 2014 on Saturday 29th March – in which the lights to millions of households, businesses and public landmarks will be switched off between 8:30 and 9:30pm – we thought it might be useful to list some activities that you can do