Bill Scott, 65, a cartoon writer-producer who lent his voice to the characters Bullwinkle the moose and Dudley Do-Right, a Mountie, died Nov. 29 at his home in Tujunga, Calif., after a heart attack.

Mr. Scott was best known as the voice behind several characters from the popular "Rocky and His Friends" television show.

He was also head writer and coproducer of the cartoon series.

The show, which starred a flying squirrel named Rocky and his moose sidekick, Bullwinkle, began in 1959 and spun off several programs that ran through 1973. The shows are still being rerun.

The programs featured much topical satire, puns, and sendups of everything from the Cold War to silent films. Rocky and Bullwinkle's most frequent foils, Boris and Natasha, directed by the sinister "Fearless Leader," were attired in classic spy garb and spoke with eastern European accents.

Do-Right, a noble but obtuse member of the Royal Canadian Mounted Police, was forever rescuing Inspector Fenwick's daughter, Nell, from the snares of Snidely Whiplash.

Mr. Scott also was the voice of George, the Tarzan-like, vine-swinging hero of "George of the Jungle."

Although the program never received very good ratings, it enjoyed laudatory critical reviews and a hard-core following of viewers not normally given to watching "cartoon" shows.

Mr. Scott, who was raised in New Jersey and attended college in Denver, entered the animation field at the end of World War II. He was a story man and scriptwriter with Warner Bros. and United Productions of America before moving to Jay Ward Productions, maker of the Rocky shows, in 1958.

Most recently, he provided the voice of Gruffy Gummy and other characters in Disney Studios' "The Gummy Bears." He was a member of the board of governors of the Academy of Motion Picture Arts and Sciences.

Survivors inlcude his wife, Dorothy, and three children.