Rock-A-Doodle
(1991)

The Duke chokes Edmund to death and then in rage Chanticleer engages in a fierce battle and destroys the Duke.

All of the animals come up to Edmund as a cat and we see him change back into his human form.

The animals realize he was a boy all along and it turns out the whole film was just one big dream sequence due to Edmund being struck by lightning.

Thanks, LeoLion!

(Links open in new window)
Read more about this film at The Internet Movie Database.