Facebook post by University of Helsinki

Fearfulness and anxiety are likely to be hereditary traits in dogs, and there may be shared factors underlying anxiety in both humans and dogs.
Fearful Great Danes provide new insights to genetic causes of fear | University of Helsinki helsinki.fi

Professor Hannes Lohi’s research group at the University of Helsinki has identified a new genomic region and anxiety-related candidate genes associated with fearfulness in dogs. Findings support their hypothesis that fearfulness and anxiety are hereditary