His back was arching like an angry cat's.

I saw their backs arched, and their legs climbing the steps.

He raised his head as his back and tail arched into a curving spear.

He pressed her backward until she lay against the set tee's wooden arm and still farther, so her back arched over it.

The herd beyond, numbering upwards of a hundred, was mostly on all fours, backs arched.

If she had been a cat, her back would be arched, her fur standing on end.

His legs were splayed beneath him and his back was arching near the out-of-bounds line.

He stood up carefully, arched his back.

The cat's teeth were bared now, and its back had arched as it once more spat out at Lisa.

An entire nation of meerkats was on the move, their backs arched and their feet a blur.