These cheeky little chaps are the largest rodents of the Alps region and are up to 60cm tall. Marmots are generally good-natured and friendly creatures who spend a lot of time in their complex underground structures called burrows. At the first sign of danger they stand upright and make a whistling sound as a warning to others in the colony. In case you wanted to do some wildlife spotting while on the slopes, you are unlikely to meet these furry fellows. Apart from the fact they are timid creatures, they also hibernate. After mild winters, they sometimes emerge from their burrows as early as February – a cause for great celebration in Punxsutawney, Pennsylvania made famous by the 1993 film ‘Groundhog Day’.