your bark is worse than your bite

(one's) bark is worse than (one's) bite

One's words or demeanor is worse than one's actual behavior. Mr. Stewart may yell a lot, but his bark is worse than his bite—he's actually helped me carry my groceries many times. Don't worry about Sarah's threats. Her bark is worse than her bite.
See also: bark, bite, worse
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

your bark is worse than your bite

If someone's bark is worse than their bite, they seem to be much more severe or unfriendly than they really are. My bark is definitely worse than my bite. When people get to know me, they'll tell you I'm just a big softy really.
See also: bark, bite, worse
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
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