Kasper is a pro. His "Baroo?"* earns him 10/10 points. It cannot possibly be done any better, unless you're this owl or possessed by the devil or something.
*Baroo: BAROO [BAH-ROO] (noun) (sound effect) A common animal look expressing: “Whut the…?” Frequently accompanied by a head tilt and/or wrinkled brow (explanation copied from cuteoverload.com ).
Picture of my sister's wittle angel taken by my sister. Or her husband, iunno.