Scooby-Dum

Scooby-Dum is a talking anthropomorphic dog, and the cousin of the Great Dane Scooby-Doo, who was introduced in the television series The Scooby-Doo Show as a short-lived recurring guest. In spite of this, he was favored enough to be included in the cast (as a member of the Scooby Doobies) of the Laff-A-Lympics spin-off. He is voiced by Daws Butler.

TV series

 * The Scooby-Doo Show
 * 1.3 "The Gruesome Game of the Gator Ghoul"
 * 1.5 "The Headless Horseman of Halloween"
 * 2.2 "Vampire Bats and Scaredy Cats"
 * 2.4 "The Chiller Diller Movie Thriller"
 * Laff-A-Lympics
 * 1.1 "The Swiss Alps and Tokyo, Japan"
 * 1.2 "Acapulco and England"
 * 1.3 "Florida and China"
 * 1.4 "The Sahara Desert and Scotland"
 * 1.5 "France and Australia"
 * 1.6 "Athens, Greece and the Ozarks"
 * 1.7 "Italy and Kitty Hawk, North Carolina"
 * 1.8 "Egypt and Sherwood Forest"
 * 1.9 "Spain and the Himalayas" (no lines)
 * 1.10 "India and Israel" (no lines)
 * 1.11 "Africa and San Francisco"
 * 1.12 "The Grand Canyon and Ireland" (no lines)
 * 1.13 "Hawaii and Norway" (no lines)
 * 1.14 "North Pole and Tahiti" (no lines)
 * 1.15 "Arizona and Holland" (no lines)
 * 1.16 "Quebec and Baghdad" (no lines)
 * 2.1 "Russia and the Caribbean" (no lines)
 * 2.2 "New York and Turkey"
 * 2.3 "South America and Transylvania"
 * 2.4 "French Riviera and New Zealand"
 * 2.5 "New Orleans and Atlantis"
 * 2.6 "Morocco and Washington D.C." (no lines)
 * 2.7 "Canada and Warsaw, Poland"
 * 2.8 "Siam and the Moon" (no lines)

Books

 * The Funtastic World of Hanna-Barbera Starring Scooby-Doo

Guess Who?
In an apparent reference to Dum in the Scooby-Doo and Guess Who? episode "When Urkel-Bots Go Bad!", Scooby dips his head in a giant jar of Volcano Hot Scooby Snacks and when he comes back out, he's wearing hat (but gray instead of red) and the Scooby Snacks in his mouth are arranged crooked the same way as Dum's.

Behind the scenes

 * For some reason, Scooby-Dum didn't appear in Marvel Comics' Laff-A-Lympics.