He was grinning widely, his big ears perked up in pleasure.

His ears perked up, and he heard the cry of frightened birds.

Then her ears had perked up when she'd heard the word "nasty."

"Might not hurt for them to keep their ears perked up some."

His ears perked up, however, at the next statement.

Pepper rose to a crouch, and her ears perked up.

Hishn's ears perked up, and she looked to her left.

When the subject turned to obesity lawsuits, her ears perked up.

His startled ears perked up to what sounded like a very strange foreign language.

When they reached it, ears perked up all over the village.