He glanced over his shoulder to find the danger that had made her voice so hard.

And she yearned to take the fierce head in her arms; there were tears she could have wept over it.

He was snarling again, prepared already to battle, and for her sake.
"Bart!" she repeated, more gently.

"Lie down!" He turned his head slowly back to her and looked with the unspeakable wistfulness of the dumb brutes into her eyes.

But there was only one voice in which Bart could speak, and that was the harsh, rattling snarl which would have made a mountain-lion check itself mid-leap and slink back to its lair.