Woody Woodpecker. Donald Duck. Iago from “Aladdin." Louie, the U of L cardinal. All these birds have something in common: at various points in their histories, they have been depicted with a full toothy grin.

Which leads to our latest Curious Louisville question from Rachel Peterson: “Why does the U of L cardinal mascot have teeth?”

“Birds don’t have teeth,” Rachel said. “I get that it’s trying to look fierce, but it’s just biologically inaccurate."