Pred:you are a thief who steals from multiple houses in one night,how do you never get caught?by eating whoever is in your path!
Prey:you wake up in the middle of the night by a sound

Pred:you wake up,you hear something in your house,could be a thief,a.k.a. A delicious snack
Prey:you're a thief,you just entered a predator's house,but you didn't know that a predator lives here