one's claws are showing

(one's) claws are showing

One has become particularly aggressive, confrontational, or spiteful. I think you need to calm down, Janet—your claws are showing. A few people's claws were showing, so I thought it was high time we got out of that party.
See also: claw, showing
Farlex Dictionary of Idioms.

one's claws are showing

one is acting catty; one is saying spiteful and cruel things. Gloria: Did you see what she was wearing? I wouldn't be caught dead in it! Sally: Gloria, my dear, your claws are showing.
See also: claw, showing
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • (one's) claws are showing
  • claw
  • showing
  • gotten
  • get (one's) claws into (someone)
  • get your claws into
  • get your claws into somebody
  • get your claws into someone
  • claw away
  • were