Duck family (Disney) strip, Della writes to Donald that the boys had placed a firecracker under their father's chair as a prank and that their father had been sent to the hospital. This was the reason why the boys first showed up at Donald's house. Thereafter the father is generally assumed to have disappeared. In "The Richest Duck in the World", when Scrooge mentions that the few family members he had had disappeared, the boys respond "We know how "that" feels!" Donald's cousin Fethry Duck was created for the Disney Studio Program by Dick Kinney and Al Hubbard and was first used in
Donald Duck the world believes Mickey to be kidnapped. Donald Duck is then arrested for the kidnapping of Mickey, as he is considered to be the chief suspect, due to their feud. However, Donald did later get the charges dismissed, due to lack of evidence. Walt Disney, in his "Wonderful World of Color", would sometimes make reference to the rivalry. Walt, one time, had presented Donald with a gigantic birthday cake and commented how it was "even bigger than Mickey's", which pleased Donald. The clip was rebroadcast in November 1984 during a TV special honoring Donald's 50th birthday, with Dick Van Dyke