Take a handsome hero, a helpless heroine, a sinister villain, add spaceships and ray guns...
...and, you've got classic 1940s-50s sci-fi action!
Oh, did we mention they were anthropomorphic animals?
This never-reprinted story from Vic Verity Magazine #7 (1946) was obviously the first episode of a projected series.
Unfortunately, it appeared in the last magazine the short-lived Don Fortune Publishing ever produced!
Both the writer and artist are, at this point, unknown.
But the other stories in the comic were the work of CC Beck, Otto Binder, and others who worked on the Fawcett Comics line, so the odds are that the writer and artist for Rocket Rex are also from that ensenble.