The word "撕咬" is formed by combining two phono-semantic characters: "撕", meaning to tear, consists of the hand radical "扌" indicating manual action and "斯" as a phonetic component; "咬", meaning to bite, consists of the mouth radical "口" indicating oral action and "交" as a phonetic component. Together, they create a compound verb that denotes the simultaneous or sequential actions of tearing and biting, typically used to describe aggressive behavior like that of animals.