My Divine Hound Doppelganger

He thought he'd been reborn as a dog, but later discovered it was a clone. The dog is a mongrel, scientifically known as a Chinese rural dog... And then he discovers that this dog can transmigrate to other planes!

So, from the start, he's a dog. He refines himself into a zombie, becoming a “corpse dog” or a “zombie dog”? Then there's a monkey, followed by...