Nobita finds a stray dog and brings him home, little does hi knows that the dog is actually a prince in his homeland, a world appart deep in the african 'Smokers Forest' were the dogs evolved and have their own
Doraemon: Nobita's Dinosaur
Doraemon: Nobita and the Space Heroes
Pinocchio 3000
Doraemon: Nobita and the Island of Miracles – Animal Adventure