One of the finest examples of animation ever made for television, if not the finest, is Sherlock Hound, from 1984-85. I am in the middle of watching the series on DVD, and even if not all of the stories are particularly compelling, every one of them is charming and a visual treat of exceptional quality. Here is some more background from a video blogger, but note that some of his attempts at humor are confusing and undercut the point he is trying to convey.
I strongly prefer watching anime with its original Japanese soundtrack and English subtitles, but the only episodes of Sherlock Hound available in decent video quality on YouTube are dubbed in English.
https://youtu.be/SHsAi0jtN_w