 CONT: In the scene where Doris knocks on Felixs door, Felix turns  on a clock radio type device that plays a recording of a barking dog  to scare off intruders. A few minutes later when Felix dresses as a  skeleton to Scare Doris from hiccuping, in the ensuing scuffle Felix  bumps into an audio cassette recorder that turns on the sound of the  barking dog again. Its not the same device that he used earlier.