Oh! Heavenly Dog

Homeward Bound: The Incredible Journey showcases the adventures of two dogs and a cat as they journey to find their owners. While it doesn't include a human-to-animal transformation, it provides an emotional and humorous story that should resonate with fans of dog-centric films.

Cats & Dogs employs the concept of talking animals with a secret life, delving into the secret war between felines and canines. Although it's more action-packed and less mystery-focused than Oh Heavenly Dog, it plays with the idea of animals leading lives unknown to humans.

Turner & Hooch offers the heartwarming blend of a slobbery dog teaming up with a human to solve a crime, much like Oh Heavenly Dog. Tom Hanks stars as a fastidious detective who unexpectedly partners with a large, drooling Dogue de Bordeaux to solve his friend's murder, leading to a comedic yet touching adventure.

Beverly Hills Chihuahua presents a lighter take on the talking dog genre, focusing on a pampered Chihuahua who finds herself lost in Mexico. Although more focused on comedy and less on mystery, fans of Oh Heavenly Dog might enjoy the conversing canine's adventures.

The Shaggy Dog focuses on a man who finds himself turned into a sheepdog, echoing the body-swapping aspect of Oh Heavenly Dog. It combines family-friendly humor with the fantastical element of human to animal transformation, leading to various comedic situations.

K-9 is another buddy-cop movie featuring a human-canine pairing. James Belushi plays a cop who must work together with a German Shepherd named Jerry Lee to take down drug dealers. Their unlikely partnership delivers both comedic moments and emotional depth reminiscent of Oh Heavenly Dog.