Yes, it was a childhood favorite of mine as well. In Seattle, it was even revived during the early seventies as a co-feature at a local hardtop theater.

I always loved the animal people and the performance of Berry Kroeger as the "mad scientist." Female lead Joyce Taylor was appealing to look at, but essentially played a *$@%%. Star Anthony Hall later became Sal Ponti the screenwriter (DOCTOR DEATH, SEEKER OF SOULS was one of his scripts).

I had the Dell comic book as a kid. In the comic book, there were some flying men who were apparently cut from the film.

The old MGM laserdisc was full frame, which surprised me a bit.