Sense of smell

It's dark outside and winter has set in with the associated stormy weather. Then it's best to rummage around a bit, and today it's a questionnaire about dogs in Sarpur, a cultural historical database, that was chosen. I came across a story about the dogs' sense of direction and sense of smell, which I would like to quote here. It is a man, born in 1012 who writes:

"Stories of the wisdom of dogs will be countless, but I lack the knowledge to trace them here, as it would be too long. It is certain that many people who were lost in storms or snowstorms resorted to letting the dog lead them home, and it rarely failed. It often happened that sheep were lost in storms and sometimes survived in the snow for weeks and months.
Then it was good to have a dog that could find the lost sheep, and some farmers had them and were then hired for searching. These were dogs of the Icelandic breed. Some of them could distinguish whether the livestock in the snow were alive or dead. One farmer had two such dogs, one only searched for living sheep, and the other for dead."

Attached is a picture from October this year.