Bark is worse than its bite
Meaning
A threat seems scary, but the person is harmless.
Usage
Used to reassure others when someone sounds angry but is calm at heart.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Dog imagery where barking is bluster without harm.
Used since the 17th century to describe tough-looking yet gentle individuals.