The Last Visible Dog

For years this childhood memory has haunted me, but the weirdest thing was I could not remember what it was from.  Often I would ask people if they remember "The Infinite Dog" but no soap.  Honestly, I began to think I had dreamt it up myself.  But just the other day, I was looking up psychedelic animation on You Tube and a suggestion popped up for the 1970s animated film "The Mouse and His Child."  This film used to play all the time on the Disney Channel when I was a kid.  And then it all came back and hit me like a ton of existential bricks:

"Note well an endlessness of little dogs receding to a regressive diminution to a revelation of the ultimate truth...  Somewhere beyond the smallest dog, the last of them is-- infinity!"

The image horrified me so much, I can't even explain it.  Perhaps it was the super-creepy original illustration of the dog.  Or maybe animated films from the 70s were all designed to terrify small children.