somebody’s bark is worse than their bite
US /ˈsʌm.bə.diz bɑːrk ɪz wɜːrs ðæn ðer baɪt/
UK /ˈsʌm.bə.diz bɑːrk ɪz wɜːrs ðæn ðer baɪt/

1.
лай хуже, чем укус, он не так страшен, как кажется
used to say that someone is not as unpleasant as they seem or as their words suggest
:
•
Don't worry about the boss, his bark is worse than his bite.
Не беспокойся о начальнике, его лай хуже, чем укус.
•
My grandmother seems strict, but her bark is worse than her bite.
Моя бабушка кажется строгой, но ее лай хуже, чем укус.