Jody Still Writes
This is a fascinating, silent 1945 film by avant-garde filmmakers showing the lives of their cats. There are no people in it at all. (Warning: closeups of kitten births.)
https://publicdomainreview.org/collection/the-private-life-of-a-cat-ca-1945/
The Private Life of a Cat (ca. 1945)

Experimental film from Alexander Hammid (and possibly also Maya Deren) exploring the lives of their two cats (and then five kittens) with which they lived in their Greenwich Village apartment.

The Public Domain Review
Mar 19 at 11:13pmWeb