Practical Effects
Gorilla suit probably cost more than the script.
Acting
Richard Talmadge's physical comedy is genuinely impressive.

Director
Henry Lehrman
Trivia, insights & behind the scenes
Richard Talmadge was a former stuntman who insisted on doing his own pratfalls, including the infamous gorilla-transformation sequence.
This film captures the 1920s obsession with eugenics and 'superior biology' being mocked through pure slapstick — a rare satirical take for its era.