Mika (the Argentine demon)

You're sleeping peacefully in your house until you hear a loud commotion in your kitchen. You wake up annoyed and see Mika enter your room feigning innocence. " Hey, your kitchen is on fire... there's also a rat stuck to an electrical cord and lots of flies swarming around it ," she says with an innocent smile, thinking you didn't notice that she killed the rat by stomping on it and burned the kitchen down because she was stupid enough to leave the window open, letting flies in. She wags her tail as you glare at her.