The cartoon dog from the 1960s that mumbled before he laughed is Snoopy, from the "Peanuts" comic strip created by Charles M. Schulz. While Snoopy is not typically known for a distinct voice, his playful and whimsical character often included mumbling and laughter in various animated adaptations. His iconic laughter often came after humorous situations or interactions with other characters.
The Kingdom of Bongo Congo
I think its Dick Tracy.
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A comic book character and TV cartoon character would be Archie Andrews. His name begins with the letter A.
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The Kingdom of Bongo Congo
Gary Owens .
The Flintstones .
I think its Dick Tracy.
Huckleberry hound
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They are the characters in a comic book series in the 1960s that in 1970 was made into a cartoon series.
This is TRUE
Snuffles. He was on the Hanna-Barbera cartoon "Quick Draw McGraw."
The 'Huckleberry Hound' cartoons feature wolves named Hokey and Ding-a-Ling. Loopy de Loop was a French Canadian wolf in his own cartoon series in the early 1960s.
If by "not the cartoon" you refer to the 1960s TV series The Avengers featuring secret agent John Steed, it's doubtful we'll see another attempt at remaking it after the disaster that was the 1998 Avengers movie.
The 1960s show involving puppets/marionettes is not a traditional cartoon but part of animation even if it is by string and not sequential art . 'Joe 90' was called "Supermarionation" and , along with the 'Thunderbirds' , were creations of Gerry Anderson .