"And I've been letting you sleep," he growled to himself, half under his breath.

He growled something else under his breath, then inhaled sharply.

He growled under his breath and said, I want to call my lawyer.

Butts hesitated for a moment, and then he growled something under his breath.

Frost growled something under her breath and then turned to Silence.

Leo growled something unintelligible under his breath, rose and walked over to the two men.

She had to hold him to keep him down, and even then, he growled under his breath.

Chappie growled something under his breath, but Chance didn't listen.

It was growling all the time, under its breath.