the adventures of a quartet of teenage mystery solvers and their talking dog proved to be such an unparalleled out-of-the-box hit for Hanna-Barbera that the studio immediately decided to try and ...

It is 49 years since Joseph Barbera and William Hanna made their first cartoon for television, a cat and dog caper called The Ruff and Reddy Show, but their work is still being shown around the world.