This isn't a great piece, but it is nice to have something of a minor, but interesting character in the film.
I actually thought it was a good match between the voice, the character, the selection of the dog breed and the animation. An excellent combination...
I liked the pencil because of Jock's expression. A good "snapshot" of his character.
Pencil of Jock
Jock was voiced by Bill Thompson. Thompson also voiced the Bulldog in the Pound, the Policeman at the Zoo, Dachsie the dog, and Joe (Tony's cook at the restaurant) who is best known for his classic line: "Well, a son of a gun! He's a got a cockrel Spanish a-girl."
Those "in the know" will remember Bill as the voice of Droopy Dog! It's frightening, but I remember him from "Fibber McGee and Molly -- talk about feeling dated. Here's IMDB's entry for Bill Thompson:
Portrayed Horatio K. Boomer, Nick Depopoulous, the Old-Timer, Vodka, Uncle Dennis and Wallace Whimple on NBC Radio's "Fibber McGee and Molly" during the thirties and forties. His character Whimple had the same voice as his later cartoon creation Droopy Dog. He died in 1971, a year after the release of The AristoCats (1970), his final acting role as Uncle Waldo.[NOTE: Thanks to Michael Sporn to commented that Bill Thompson was also the voice of the Whistling Beaver in Lady and The Tramp.]
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"Lady and The Tramp” (1955). THE WALT DISNEY ANIMATION DRAWING OF JOCK FROM LADY AND THE TRAMP, 1955, the pencil on paper drawing depicts an angry Jock, inscribed lower right C-15, matted. Size within the mat 9 x 11 inches. CONDITION: paper in good condition without any tears or creases, small blemish on the paper. [Item: 9” x 11”] Acquired 2003. SeqID-0959