Scientists believe most theropods had feathers covering their bodies.

theropods 是 theropod 的复数形式，theropod 来自希腊语词根 thero-（意为"野兽"）和 -pod（意为"足"），合起来指"兽脚类恐龙"，这类恐龙的特点是两足行走、食肉为主。