One can't help but think that he was like a caged lion and impatient to leave.
He flung himself off of his couch, and began to pace the room, like a restless, caged lion.
Under stress according to one vivid description, he would "pace up and down the bench like a caged lion".
Then he would walk around the hangar again like a caged lion.
Watching him pace around the living room, Jessica was reminded of a caged lion.
They used to say that one paced "like a caged lion".
She walked back and forth until finally her father remarked teasingly, "You're like a caged lion."
"You prowled my rooms like a caged lion, never at ease."
Greg strode up and down in front of the fireplace like a caged lion.
She could hear him pacing to and fro, like a caged lion.