The cat crouched down ready to jump.

Yanni crouched beneath the window.

I crouched on all fours.

The thief crouched behind the dorm room door.

Tom crouched down beside Mary.

Tom crouched down behind the boxes.

Then, crouching down, he rested the end of the barrel upon the ledge of the open window.

Yanni was crouched down in the corner, facing us and "secretly" taking a dump.

He crouched down next to her.

Tom crouched.