*    Otters are generally nocturnal, but on some of the west coast regions of Scotland this is not always the case.
*    The otter is known as a semi-aquatic species, and can live on sea coasts or by rivers and lakes.
*    Coastal otters have fur to keep them warm, and need to have a fresh water supply nearby so that they can clean the salt from their fur regularly.
*    Otter spraints have a distinctively sweet, musky smell, and they probably mark an otters range which can be an area of up 20 kilometres of river habitat.