Early research asked whether cats dream
Excerpt from the May 29, 1965, issue of Science News Letter
DREAMING OF MICE? Cats go through REM sleep but researchers still don’t know exactly why.
Onesharp/Flickr (CC BY-SA 2.0)
Dream phase necessary — Dreaming sleep, which seems to be a necessity for man, may also be crucial for cats.… Scientists do not know exactly what function [REM sleep] periods serve in animals.