McDuff The Talking Dog looks like it would be fun to watch, I've heard of it for years but haven't seen an episode.
The song and dance does seem old fashioned for the time, but Hollywood was in a retro phase in the mid-1970s, which might explain it.
I'd like to see more of this kind of entertainment in kids programs, shows like PAW Patrol are so literal and miss a kind of magic you get from disappearing Dogs and monsters.