In the Icelandic landscape, sheep often get lost and it has historically been the dog's job to find them and return them to the herd. They are, therefore, used to working on their own and to figuring things out for themselves, so owners have to beware lest they learn things they should not. As a watch dog, their main task was to alert the inhabitants when somebody was coming, so these dogs tend to bark a lot when they see people approaching.